Latelearner,
I guess you're trying to endear yourself with the teachers who visit this forum, are very qualified and creative, and who might utilize Bastien, Alfred, and Suzuki in their teaching.
The fact is, there are a lot of very good teachers who use these methods, and for you, a self-described intermediate player, to pass them off as trash, and say any teacher who uses them should be fired, is an uninformed and arrogant statement.
Also, as far as Hanon and Crezny - whoever he is, but I assume you mean Czerny - are concerned, while Czerny in moderate doses is useful, many very advanced pianists, and very good teachers do not think very highly of Hanon. The reason being his exercises often promote mindless repetitious playing of the same pattern over and over, that many think is a waste of time. I'm on the fence myself with Hanon.
Also, while I agree that consitent practicing is important, I don't see why adult beginners' playing cannot progress if they practice less than 2 hours per day. A real beginner might practice 1/2 hr per day at first, later might move up to 1 hr per day, and if they want, can move up to 2 hrs. per day. Most adults I know have jobs, families and other commitments, and do not have the two hours per day to practice, so for you to say that is some sort of requirement sounds a little didactic to me.
People progress at different levels including adults. I know a few adult beginners who love to play the piano, but are not trying to break any records.