Starting from the assumption that you have the courage to write about certain things, I can now give my opinion point by point.
1) You don't need to have a 32-tooth smile to deliver a good acting performance, and it's not automatic that a good film equals a career.
2) In my opinion, a certain type of message comes across; at least it came across to me.
3) Excuse me, but what would be the way to understand the world of young people?
4) Supersoul has already talked about this.
5) The fact that the police weren't exactly nice and tolerant wasn't said by Antonioni, but there are certain historical events that prove it (especially in those years; we saw similar things in America too). Then you talk about overturning the "young/good vs. police/bad" scheme; in my opinion, such a scheme shouldn't be either overturned or held as a dogma. One must know how to read contexts and situations to express a judgment.
6 & 7) See point 4.
8) In my opinion, the choice of soundtracks is important; it must adapt to the images. In "A Clockwork Orange," a certain type of music worked perfectly. In "Zabriskie Point," Floyd and Jerry Garcia fit perfectly, and you shouldn't treat him like just any guitarist.
9) A judgment that I do not share, but I have nothing to object.
10) This point is interesting. It's not mandatory for a director to necessarily stick to the filmmaking styles they used in their beginnings. Antonioni adapted and changed his way of making films based on what he wanted to convey, especially since a certain neorealism from the previous decade was likely fading away (a shame).
My judgment on Zabriskie Point: a beautiful film; I've always liked it. It might not be a 5 nor one of Antonioni's masterpieces (to the second point, I would answer with "Blow-Up" and "The Passenger"). Judgment on the review? In my opinion, it's not to be condemned, although it seems that you are too stagnant in your judgments. You're too anchored to certain schemes, and that's not ideal.
