You can enjoy a book while still noting that the characters in it are not doing good things.
What is bad is insisting that no one can point it out. That we all must pretend that acting like that is being cool free-spirit and visionary. That we cant analyze a book and make conclusions about what it celebrates, what it criticizes and what it just describes without any value judgement attached.
Somewhere along the lines people developed extremely thin skin toward what you can say about famous pieces of art. You cant really analyze them nor their characters. You must show only unfailing admiration of the characters and the book itself.