I dislike filters as well; I don't know if pixelart is a medium that was born back then to display a scene, whatever scene,
because and around the constraints of the technology, or if there was, since the start, an intent to show such scene as a Lego like construction, but in the end it's its own thing, different from any other.
It has nothing to do with nostalgia, it's a method, a medium on its own.
Pedro Medeiros, a pixelartist making great tiny weekly tutorials, has a Patreon feed that is in itself a good and immediate visual display of how pixelart is what it is:
https://www.patreon.com/saint11/posts?tag=tutorial
While, in regards the LCD vs CRT, Cyangmou, of Tower57 shares this interesting nugget:
With an explanation and interesting discussion in its twitter link:
https://twitter.com/cyangmou/status/876795711131709440
What filters are good in Winuae is basically being a curio, but to each his own.