I am not familiar with the one of the fandoms and I'm going to say that might be the case for a lot of people. We've discussed Loki so many times here lately so I swear I've seen there's plenty of people who don't think "he's just misunderstood" is a good enough excuse for his behaviour. Other than, yes of course people are more willing to overlook the bad stuff when the character is considered attractive. That's pretty common across all fandoms sadly.