I can scarcely tell the difference between 2160p and 1440p, and 1440p and 1080p unless I'm actively looking, though I am in my fifth decade so my eyes aren't what they used to be. I've found lower resolution with better settings to generally be better than the converse.

I've been using a 3080 for years and plan to keep using it until it goes to meet my Voodoo 5 in the great recycling bin in the sky. I'm lucky enough to have a second x16 slot so I picked up a 100€ used GPU for LSFG. Instant doubled frame rate, so now I'm good through 2035.

As an individual, you're not. As a market participant, you're (probably) a rounding error. All of us together have negligible market value compared to a handful of overinflated megacorps. Nvidia isn't a company that is driven by the gaming market anymore. We may have raised them up from the dust, but they've long since abandoned us for greener fields. Companies don't have loyalty, consumers do. You can't hurt them. Buy from them, don't buy from them, it doesn't matter, you're not the customer they work for anymore.