The thing is it doesn't matter if AI is going to kill us all. The industry says it might kill us all, and the industry is valued ridiculously high based on the idea it'll take all our jobs. Why would anybody support that? I mean, unless you're heavily financially invested in it.
Opposition to data centers isn't even based on doomerism. From what I can see it is based on the slop onslaught, perceived and real threat to jobs, the "10% chance it'll kill us all", environmental concerns, local concerns (property values, noise pollution, toxic pollution), and concentration of power in the hands of a few oligarchs, and a plethora of other reasons. Only one, maybe two, of those quality as ai doomerism.