Earlier quoted context omitted.
> It's blatant how UI designers don't give a damn about the users' needs, not even in FOSSland. Especially with this new "don't theme my app" movement. It's really unfortunate. The issues with CSS stylesheets in GTK should be solved with replacing CSS with a better way to describe styles, not with just throwing it all away and not letting the user set their own themes.
"don't theme my app" is not about users theming their apps, but instead against distros theming by default and more importantly the expectation that you could theme every app with a generic theme.
Maybe distros are not doing a good job of this, but that is one thing they have the power to do. QT, GTK2, SDL, wxwidgets, and more toolkits I can't even think of should all fit together on my desktop and look the same. xfce, gnome, and kde all have some nice apps, they should mix and match. This is a HARD problem, but that isn't an excuse to not face it.