Do people really like DLSS/FSR that much that they consider it a basic feature?
Absolutely, at least DLSS. DLSS is a gamechanger and a godsend. It can actually look better than native resolution while giving you massive performance increases. At worst it looks basically the same as native while giving you a massive performance boost. I've got a Ryzen 7/3070 PC and I'll use DLSS everywhere it's available as it's basically just free frames.
The same can't be said for FSR however, it's trash.
I can’t stand the look of it and I’d rather just run actually at a lower resolution since it ends up looking better.
DLSS rarely, if ever, looks worse.