The jump forward doesn't even necessarily feel that huge but the step backward is (annoyingly) noticeable.
Especially wellness.
However, I'm typing this on my Dell monitor which only does 60 Hz. It honestly doesn't bother me at all. Sure, when I scroll long pages I see the difference: the text isn't legible. But, in practice, I never read moving text.
However, one thing on which I can't go back is resolution. A 32" 4k screen is the minimum for me. I was thinking about getting a wider screen, but they usually have less vertical resolution than my current one. A 14" MBP is much more comfortable when looking at text all day then my 14" HP with FHD screen. And it's not just because the colors and contrast are better, it's because the text is sharper.