Eurogamer did write a review about playing modern games on a (very good) CRT monitor [1]. It's better than any LCD and even OLED monitors according to them:
A point not mentioned there but that is a major reason for me to use CRT: Contrast.
The contrast in most flat screens I tried is just terrible, a classic example I use is trying to play Superhot and then watch Game of Thrones right after... Superhot was everything white, so I fiddled with the controls until it was playable.
Then Game of Thrones everything was black. So I fixed it... then went back to Superhot and everything was white again.
With CRT after I adjusted it, I don't need to adjust anymore.
Some of those last generation CRTs had amazing picture. I had one from 2003 or so that could do 2048x1564 with a picture better than anything you could get from an LCD until the late 2000s.