My opinion is to allow people to enjoy their interests, if they like something that is considered unusual, or cringy in this case, So be it. There's no reason to get in a fight with someone just because you don't like what they like.
Unless they act like an annoying person, the you pretty much gotta tell them. And I don't mean they aren't allowed to like things, they just don't need to proclaim it everywhere and behave like a fool.
It's like would spam Portuguese music threads everywhere and have that kind of avatars and sigs. Treat celebs and musicians with respect man.