There are a lot of sf writers whose works I really loved when I was young, but who I now find really problematical. (Oh yes, Heinlein, I'm looking at you, and also Asimov, one of the other founding fathers.)

What's also interesting is which writers don't now strike me as so problematical that I really don't feel like reading them.

For instance, I've been re-reading a lot of John Wyndham novels lately, and it's really quite interesting to see how much individual agency he gave his female characters.