I was on my way to write essentially this, point for point, then read your post.
The factor I imagine is at work in this utterly baffling cut-off-thy-nose-to-spite-thy-face is maybe these communities have already been through so much awful, that further awfulness is a price worth paying for retribution. They assume awfulness will occur either way, but recency bias ingrains the possibility that a hypothetical ttump admin isn't as bad for Gaza than the well document awfulness or the current moment. Thus, I have control over punishing Harris and the Democrats, and maybe, just maybe a ttump admin will end this (it won't, it'll get worse).