I just can’t find a decent email client that looks like it’s from the last 20 years. Geary and Evolution both appear to be pretty modern but something about using Gmail with a Yubikey just doesn’t work and neither of them will connect to my account. Both on Fedora and OpenSUSE. Thunderbird works but it’s so old fashioned and Betterbird doesn’t look much better. What’s everyone else using?
That’s great. And if something is comfortable for you to use, it doesn’t mean it would be comfortable for the majority of other people.
Maybe you use large screen(s). Maybe your information is not important and/or the interface doesn’t require actions. Context matters.
As a user of 13-inch 2560x1600p screen, I definitely can say that apps need more whitespace to be usable. I’ve also been using 2 monitors 27-inch each some time ago. And yes, such a configuration allows for a greater density of information on the screen.
That’s why I say (again): information density must be comfortable for humans. In their contexts of course.