But going from, say, a Sony Trinitron CRT [1] to one the first LCD was a huge step backwards, which is what GP is saying.
I did wait for the first LCD with DVI support before switching: for the difference in crispyness between an analog video cable and a DVI one was night and day (I also won many points when I helped friend set up a startup in southern california and we realized one person out of two had picked the VGA cable instead of the DVI one when setting up its desk / computer: so with the CTO late at night we went through every PC and changed all those with VGA cables to the DVI ones).
We're not saying modern days flat monitors aren't better than old CRTs: we're saying the first flat screens were complete suckage.
[1] even though on a Trinitron you could see two faint horizontal lines (Trinitron were still amazing)
https://en.wikipedia.org/wiki/RAMDAC
Which of course you could only see in direct comparison. Which most ppl didn't have the opportunity to do, so you needed experience instead to judge that. Which most ppl also didn't have, because they've been exposed to cheap stuff only.
Even a now obsolete HP ZR2240w (24" 1920x1200@60Hz) was a huge upgrade from a 21" Hitachi Superscan Supreme https://crtdatabase.com/crts/hitachi/hitachi-superscan-21-cm...
That thing was at least Trinitron equivalent, if not better, because it lacked the thin wires holding the mask from within.
Now you are talking about the start of all that, OFC there were bad and cheap ones, but there was also very good stuff from the beginning by Eizo, Sharp, NEC, and many more.
Just as with CRTs.
I don't miss them.
(Another thing to keep in mind is that the systems of the time generally could not drive the kinds of resolutions and framerates that make those CRTs shine in some of today's comparisons. At the time the difference in quality in practice was lower because of this)