I saw Sleeper as a yout and thought it was funny before I knew anything about Woody Allen as a person. I was old enough to rent that VHS, or however I watched it, but I certainly didn't mean to endorse him. To be fair, I haven't watched it again since.

ETA: This isn't some stance I've taken. This is just an anecdote about how I saw a movie both directed by and starring a person who some may find objectionable. For me at that young age, there was only the art because I was not aware of the artist so there was no "separating" to do. I'm not making any suggestions about what others should do.