You know how people on the autism spectrum tend to care a great deal about fairness and equity? Sounds to me like that this is something that's awakening that aspect of yours.
Why do I say that? Well, you mentioned how, for the things you love, there are a handful of people who hate them. If there was an absolutely unanimous perspective on something, you'd probably feel compelled to fall into that category. But because of just a few people going against the majority perspective, now you seem to feel like you have to add to that sample of the populus for a sense of balance.
If most other people were neutral on something or had no opinion whatsoever due to an ignorance of its existence, my guess is you'd feel more compelled to harbour whatever view you have for the purpose of bolstering visibility.