[caeril]

kMail is not the most performant mail client. Neomutt works fine with > 10k emails.

DPI scaling works fine with Wayland + Kanshi, and a few environment variables for GTK+ applications.

The "mess" of application styling is an application-level problem, and the same problem exists in plenty of Windows applications.

[stychos]

I didn't use Windows for more than a decade, but I don't remember a mess with the standard dialogs in it. Maybe with the Qt-based applications, which brings their crap everywhere.

Neomutt is not a GUI mail client, and from usual distributives-oob clients, kMail seems to be most performant.

DPI scaling works terribly everywhere in Linux if you have more than one monitor with different DPI, none of the most popular distributives has it fixed.

I understand you wanna say that Linux can be usable on a desktop with a jointer and a file, but my talk about usual people and what is wrong in it from their PoV. I love Linux kernel and how it behaves on servers, but it is a still crappy non-uniform zoo on desktops. Some strokes of light and unifying can be seen with the systemd, but it's not related to GUI yet, and even there it has some strong integration counterforces involved. Linux needs systemd for GUI.