Projects having a self-appointed "BDFL" has become kind of a red flag for me in general. I know the term is used somewhat tongue-in-cheek, but still I find it really offputting. Ruins the vibes.

Has happened just recently that I found an interesting project, was excited about it and even thought about becoming a contributor eventually... until I saw that its founder calls themselves "BDFL", and then I just noped out.