Yes. It could potentially dissuade me from buying a physical copy. I could still stream it with no issue if it was something I liked or wanted to hear, however it would be less likely for me to randomly check out something unknown to me if the artwork was bad.
Absolutely. If I find the artwork off-putting (violent, gory, grotesque) I usually won't own the album. If it's sexist or reads that way I won't listen to the album or possibly the band at all (exceptions for albums/songs from, like, my childhood and before I knew about them)