You can read through all of /u/spez's replies here [0]. It won't take long, because the most striking thing about this AMA wasn't that he said very many controversial things but that he barely said anything at all. There's one moment where he gives a sarcastic jab about how Reddit isn't profitable while some of the third party apps are, and an earlier one where he repeats some of the things he said about the Apollo dev. But mostly he just avoided even moderately controversial questions.
He put in an appearance for about an hour, ignored all the most upvoted questions, then disappeared.
He put in an appearance for about an hour, ignored all the most upvoted questions, then disappeared.
[0] https://old.reddit.com/user/spez/comments/