The twitter thread explains it, the video is only like 30 seconds long btw, but the affordable housing might very well be a front, but no, it's not like they're building section 8 housing, just a few duplexes among $300,000 homes. Yes, he's NIMBYing this but he did it by literally saying he'd pull his business if they didn't honor his wishes, he literally said that in the clip. He also referenced talking to a one of the councilpersons off the record about this.
Pretty gross capitalistic behavior that "the old Dave" would have definitely stood against. Same person who turned his back on $50 million on principal.