> I can't shake off the impression that Apple does not offer options for better window management to make your screen more cluttered and thus sell you more displays.

OP here. This is a conspiracy theory I can get behind!

Apparently font rendering is going to get bad on Linux too with gtk4. I believe at some point they decided to stop supporting subpixel rendering with the idea that everyone will have hidpi displays. Unfortunately the display industry is lagging and 1080p is still the norm...

That doesn’t make any sense at all. Apple didn’t sell an up-to-date display for years. It’s only recently that they introduced the Pro Display XDR and the Studio Display. Before the XDR, there was only the LoDPI Thunderbolt Display from 2011.