I don't know why people voted for this. Probably something to do with all the big tech CEOs visibly paying bribes and tribute to the corrupt and massively unpopular president. I doubt the anti-data-center backlash is as extreme without that.

But also just NIMBY. No one likes to live near industry.

To get this big a backlash, you need a variety of reasons to oppose that appeal to a broad coalition of voters. Inevitably some of those reasons will be silly (a lot of people talked themselves into voting for a 2nd term for Trump, after all!).