I would not say I feel very bad for Nico. Trusting your parents and doing what they say is not some unforgivable sin. Now whatever idiot told him to skip practice and he listened, that's on him. Very hard to come back from that one from an image perspective. Nico has been around team sports long enough to know that.
But the family of sociopaths angle... cmon'. It is much simpler than that. A polynesian family with zero ties to the area saw East TN as a check to be cashed. They did not care about the people here, the university, the football program as a whole, nothing. We saw the exact same thing happen with TooToo.
What you called "toxic control, lies, and manipulation" I would simply call a group of incompetent people barely qualified to tie their own shoes play-acting as agents. And they screwed up their kid's image. Not because of some Machiavellian angle, but because they were out over their skiis.