With GNOME, screen elements (texts, windows and widgets) are big (way bigger than macOS or Windows). In this case 1080p-like at 2x scaling should be OK with this screen size.
But people will swear up and down to me that there is no way I could possibly tell the difference between screens.
You can literally see individual pixels on a 1080p screen!
I am on Macbooks, but I want to switch to something with Linux so I am waiting for the gen 9 Thinkpad X1C with 4k screen to be available at some reasonable price.
Font rendering is also clearly worse on Linux than Mac, making the fuzzy pixels even more unworkable. I dual booted a 2015 Macbook Air into several Linux distros and I could barely read the text no matter which settings were applied.
More relevant to the overall thread: Pop OS is awesome.
Yes, they are needing for to change name, however. "Pop_OS!" is very a stupid name, no low hyphen "_" charactir or exclimation in name is good. Only "Pop OS" is good.