Spiny said:-"I really struggle with the idea that the "true" meanings of the teachings is made very obscure and "hidden away" in the suttas. I don't see why a teacher would take this approach."
Buddhism would not have become a major religion due to the 'real teaching' because too few people could understand it. So the real teaching was included in another easy-to-understand teaching.
This outer teaching serves as a vehicle for Buddhism to be spread far and wide. It is a good teaching in itself and meets the needs of most people.
But it does not enable one to attain permanent liberation in this life, for that one needs the 'real teaching.'
"And what is the assembly trained in vain talk, not in interrogation?
Here, in this kind of asembly, when those discourses spoken by the Tathagata are being recited that are deep, deep in meaning, world-transcending, connected with emptyness, the bhikkhus do not want to listen to them, do not lend an ear to them, or apply their minds to understand them: they do not think those teachings should be studied and learned...." [BB, TNDB, page 163, from AN 2.47]
I can imagine these bhikkhus saying:"Deeper meaning! There is no deeper meaning."