As usual, it's never as simple as 'all or nothing' when it comes to things. There are good reshades and bad reshades, so they're better off being judged on a case by case basis.
Here's an example of a good one:
Aside from that, I agree with you that Final Fantasy 7 Remake doesn't really need it, but I'm not saying this for the same reason you are. I'm saying this because FF7R isn't really enough of a graphical powerhouse for reshade to make any big difference