There's ample research done on how disaster relief refusals are related to partisan political bullshit. The most recent paper is from 2015.
It's nothing new and Trump wasn't exactly breaking the mold by considering it. Although with the way the internet shrinks and amplifies everything, I doubt politicians could get away with it as easily these days without violent mobs forming.
Personally, I think Texas and Florida should fuck right off. Not because they're "Trump" states, but because they're the most vocal in shitting on the federal government consistently, yet also rank among the top states for drawing federal funding and aid. Knowing how any why ERCOT exists in Texas, and seeing how absolute dogshit it is always makes me chuckle.
At least California embraces and is open about the Governmental Tit from which it suckles.