How is calling out misogyny "even more gross" than misogyny itself? PUA/MRA/redpill/whateverthefuck is all based on misogyny. The video games/religion comparison doesn't work because they're extremely broad, subjective categories that have different effects (positive or negative) on different people. Misogyny is objectively harmful in any form, for any person.

Just like the white supremacist who shot up the Sikh temple was obviously motivated by racism, this guy was obviously motivated by misogyny. That's more of a 1:1 comparison.

Edit: https://medium.com/the-archipelago/1bb065f76278 puts it pretty well.