I like musical artists because I like their music. If I discover something about the artist themselves that I really don't like, I'll try to not listen to their music or support them anymore by buying their new music, but that never lasts. What tends to make me like them more is what they stand for. Do they do anything with their positions to improve those less fortunate or endorse a cause that I respect? If so, I'll like them more. Another thing is interviews. If I like them in an interview I watch online, I generally like them a lot more and would maybe even change my not-so-great opinion on some music based on them as people and give their music another shot.