I do not doubt your word on your experience with teachers. What I meant was that I do not see how this statement can agree with the Visuddhimagga. According to VsM 4 it is possible to experience a spontaneous absorption due to previous practice (even those in previous lives) as in the given example of Ven. Mallaka. Now, if a person has such an experience and goes to a teacher and tells him about it, wanting to learn how to repeat it, do you really think that that teacher would tell him this wanting, this intention, is wrong? It would disagree with everything written in the VsM.
Not that you have shown.
I think the teacher would start by identifying the experience and tell the person how to enter it intentionally.
That is assuming that the experience is worth "repeating."
When this has been achieved he could go on according to the practice described in Visuddhimagga. At least that is what I would expect of a good teacher.
What I would expect from a good teacher seems to be a bit different, and I have been lucky enough to have had excellent teachers in the Soto Zen, Vajrayana, and Theravadin traditions. They have all said one way or another: do the practice - what happens happens, what does not happen does not happen.
If you are interested in it we could go on via pm.
I think we can let this one go.