I agree that using upscaled graphics in PCSX2 make them more playable on a modern large TV (Looking at you Gran Turismo 4 in 8k60fps) but I think - because the games _were_ designed to be played on old CRT TVs with scanlines - using an older TV makes the games feel much better. I'm planning making a retro corner with an old TV and older consoles instead of just playing on scaled up emulators.
>using an older TV makes the games feel much better
Outside a handful of enthusiasts, the vast majority of consumers are not gonna start buying CRT TVs back in their homes just to play a few vintage video games.
Especially that most CRT TVs are garbage by today's standards, and the ones that are indeed good are rare and sought after and command huge premiums on the used market.
Emulators are by far the more sensible solution for most even if they can't replicate the CRT "effect".
Insane FPS refresh rates. A different lighting technique that kind of blurred together the pixels in a vague antialias. Less tearing than their potentially cheap TV.