There was so much sci-fi and fantasy that I loved as a child that now reads as blatantly exoticizing, stereotyping, oppressively gendering, horridly ableist, fatphobic, and/or overtly white supremacist (Tolkein, Lewis) now that I am an adult educated on those things. It's strong enough that I don't re-read books because I don't want to ruin child me's experience. Some I cringe even thinking about re-reading.
But then I am reminded that authors like Cj Cherryh still have fan interactions and sometimes even listen to criticism. Maybe I have a responsibility to reach out to my estranged literary parents. I can't do a lot because I have so many other responsibilities, but maybe I can make it a goal to read one new book by an old favorite author (who is still alive) each year, review it with my current understanding and share that with the author.
Unfortunately a lot of them have died, but here is the list of still-alive favorite authors of pre-consciousness me that I have thought of so far:
Piers Anthony (this one I just can't ever read again. too pro-rape. AVOID. None of his pluses are worth the constant pro-rape thread in all of his work. I stopped reading this shitwad before I even discovered feminism)
Alan Dean Foster
Elizabeth Anne Scarborough
And more recent favs which still should be critically examined:
This is a looong term project so we'll see if I manage or not.