I kept thinking of how people responded to the human story in KOTM, and I still find no fault in it. Vera's character reminds of me of how people saw Bane in TDKR and Lex in BvS; people hated those characters for who and what those characters were, and my response was "yeah? that's how you're suppose to feel!" Dance's character is the same, but beyond that, nothing wrong with Serizawa, the dad, nor Millie or anybody. So IDK "shrug"
Also, the talk about "I go for the monster action" is understandable, but the way they're saying it, they would've wanted 10-20% of human story, the rest with the monsters, with the human scenes being short and just there to lead to the longer monster scenes. That is not only impossible, its unrealistic.
Again, I just don't get the negative response. And this ain't my first rodeo.