I have a 4k 28" monitor which I can't use at its highest resolution with 100% scaling and a 4k 40" TV that is a few inches further away which I can comfortably

I have a 4k 28" monitor which I can't use at its highest resolution with 100% scaling and a 4k 40" TV that is a few inches further away which I can comfortably use at its highest resolution with 100% scaling. I'm a big fan of the setup I have and suspect I would be equally happy with a slightly larger display (maybe up to 55") a bit further away. Maybe the 28" screen would be more usable with computer glasses. With the 40" screen, I can see fine with my regular glasses. 75" seems a bit extreme, as it would require a few more feet of distance between me and the screen to make the screen fit into my field of view. I could see it as beneficial and quite usable in a situation where you need high resolution with many people viewing it.