In fact, it's far more common to see merchandise where the girls are used to represent the heroes and villains than merchandise depicting the heroes and villains themselves

You would be correct

He also likes to go after random people who comment on an image he disagrees with. Take, for example, the comments he left on a gag comic in which Luz (an Owl character) and Star Butterfly end up being executed

More of the same

He also harasses obvious trolls just because they go after his precious Owl House