Hey Peter
I think it's important to differentiate between "believing in X" versus "holding a view regarding X". I think these are two different, yet related, things. I think one can neither believe nor not believe in X while still holding a view of X. I think they are related because one's beliefs do tend to influence and shape one's views.
To me however if you hold a view of there being rebirth you believe it at some level. Could you hold a view of God "There is God" and yet not believe in God?
I don't find the Buddha talks much about beliefs. But I do find he talk about how we should act. He says we should act as if there will be birth after death.
Indeed he does but he also taught that the path is progressive, that views need to be left behind sooner or later. If one has a good understanding of Dhamma then one can let go of a view or belief of rebirth after death without falling back into the net of another view such as annihilationism, nihilism etc and still practice the NEFP (with the right view of the 4nt's)
Also the Buddha taught other ways of being moral and increasing wholesome mind states without appeal to rebirth
the householders of Bamboo Gate in the Veludvareyya Sutta
"Here, householders, a Noble disciple reflects thus: 'I am one who wishes to live, who does not wish to die; I desire happiness and am averse to suffering. Since I am one who wishes to live, who does not wish to die; I desire happiness and am averse to suffering, if someone were to take my life, that would not be pleasing and agreeable to me. Now, if I were to take the life of another -- of one who wishes to live, who does not wish to die, who desires happiness and is averse to suffering -- that would not be pleasing and agreeable to the other either. What is displeasing and disagreeable to me is displeasing and disagreeable to the other too. How can I inflict on another what is displeasing and disagreeable to me?' Having reflected thus, he abstains from the destruction of life, exhorts others to abstain from the destruction of life, and speaks in praise of abstinence from the destruction of life. Thus this bodily conduct of his is purified in three respects.
"Again householders, a noble disciple reflects thus: 'If someone were to take from me what I have not given, that is, to commit theft, that would not be pleasing and agreeable to me. Now, if I were to take from another what he has not given, that is, to commit theft, that would not be pleasing and agreeable to the other either. What is displeasing and disagreeable to me is displeasing and disagreeable to the other too. How can I inflict on another what is displeasing and disagreeable to me?' Having reflected thus, he abstains from taking what is not given, exhorts others to abstain from taking what is not given, and speaks in praise of abstinence from taking what is not given. Thus this bodily conduct of his is purified in three respects.
"Again householders, a noble disciple reflects thus: 'If someone were to commit adultery with my wives, that would not be pleasing and agreeable to me....Having reflected thus, he abstains from sexual misconduct, exhorts others to abstain from sexual misconduct, and speaks in praise of abstinence from sexual misconduct. Thus this bodily conduct of his is purified in three respects.
"Again householders, a noble disciple reflects thus: 'If someone were to damage my welfare with false speech, that would not be pleasing and agreeable to me....Having reflected thus, he abstains from false speech, exhorts others to abstain from false speech, and speaks in praise of abstinence from false speech. Thus this bodily conduct of his is purified in three respects.
"Again householders, a noble disciple reflects thus: 'If someone were to divide me from my friends with divisive speech, that would not be pleasing and agreeable to me....Having reflected thus, he abstains from divisive speech, exhorts others to abstain from divisive speech, and speaks in praise of abstinence from divisive speech. Thus this bodily conduct of his is purified in three respects.
"Again householders, a noble disciple reflects thus: 'If someone were to address me with harsh speech, that would not be pleasing and agreeable to me....Having reflected thus, he abstains from harsh speech, exhorts others to abstain from harsh speech, and speaks in praise of abstinence from harsh speech. Thus this bodily conduct of his is purified in three respects.
"Again householders, a noble disciple reflects thus: 'If someone were to address me with frivolous speech and idle chatter, that would not be pleasing and agreeable to me. Now, if I were address another with frivolous speech and idle chatter, that would not be pleasing and agreeable to the other either. What is displeasing and disagreeable to me is displeasing and disagreeable to the other too. How can I inflict on another what is displeasing and disagreeable to me' Having reflected thus, he abstains from idle chatter, exhorts others to abstain from idle chatter, and speaks in praise of abstinence from idle chatter. Thus this bodily conduct of his is purified in three respects."
However he did say that rebirth does promote wholesome states as well
To name one sutta
MN 68
"So, Anuruddha, it is not for the purpose of scheming to deceive people or for the purpose of flattering people or for the purpose of gain, honour, and renown, or with the thought " let people know me to be thus", that when a disciple has died, the Tathagata declares his reappearance thus "so-and-so has reappeared in such-and-such a place" Rather, it is because there are faithful clansmen inspired and gladdened by what is lofty, who when they hear that, direct their minds to such a state, and that leads to their welfare and happiness for a long time"
lofty
Adjective
[loftier, loftiest]
1. of majestic or imposing height
2. morally admirable: lofty ideals 3. unpleasantly superior: a lofty contempt
To me, hearing Ven. Buddadasa say "wait and see" does not tell me anything about whether he lives and teaches according to Right View.
Read some of his work and judge for yourself
http://www.what-buddha-taught.net/Books ... r_of_I.htmmetta