"If folks are mad about actions that are legal, it makes zero sense to be mad at the actor."
There are people with mindset "I will try to be an overall decent human being and maintain some awareness and empathy of others", and there are the "I will be as much of a selfish asshole as the legal system allows me to, and wreak untold damage in the endless game of whack-a-mole".
I think in fact more of us should be gunning after the second kind :). To paraphrase you, It makes zero sense for me to be OK with fundamentally anti-social, anti-humanity humanoids.