This is unrealistic.
We have to deal with people in the West who have "extraordinary experiences." Society does not have the resources to help all those people "come down/back" without some sort of tranquilizer (which is what "anti-psychotics" really only are) for short-term use if they need it.
And is it in their best interest, anyway? Remember we are discussing what to do beyond MPAPT. This is not an argument in favor of the present system. It's just to say that it seems unrealistic in today's Western society.
In other words, there might be a place for the use of drugs post-MPAPT. It's certainly a messy subject.