I'm a Windows/Linux user. I feel like something like Linux Mint is very much polished. My complain is the lack of main apps: adobe suite and visual studio in my case.
Looks are pretty silly and irrelevant for most power users. I run Ubuntu with the i3 tiling window manager, which doesn't even have a desktop. Having a desktop is another thing that's pretty much irrelevant, given the way i3 works. I would never sacrifice the functionality I really like just to get something that's supposedly "prettier".
There are different kinds of users. No need to call something silly and irrelevant just because it doesn't fit your preferences and priorities.
For example, one of the first things I check when trying out a new Linux distro is whether I can tweak the font rendering exactly the way I like. If this takes more than a few minutes, or if Firefox and LibreOffice don't pick up my tweaks consistently, that distro is out. I don't care what other awesome features it has. If I'm going to be looking at it for 10 hours a day, it had better not hurt my eyes. I would never sacrifice visual comfort just to get something that's supposedly "more functional". But that's just me. Other people will have other priorities.
Usability is important. Basically every X.org distro ever supports your i3 power user setup. A much smaller number of distros are aimed exclusively at making Linux easier for average users.
Adobe suite and VS are also the sole reason I have a Windows dual boot set up. Hopefully in the future but I honestly doubt it.