that's just because the USSR ruined them...
Germans still pay solidarity tax lil bro... USSR was one of the most talented entities in fucking up entire countries for decades to come, politburo was producing most vile, scheming and backstabbing ruling class ever to imagine. The very same people were running privatization and scraping all the social security programs in place, your boys from the West in Yeltsin's team were simply lacking and couldn't keep up.
with arch it's relatively easy given enough experience to build for someone absolutely minimal desktop environment which will run you a browser and that's it and it will be rock solid even with rolling release updates because there's nothing to break.
every time I've tried "out of the box" desktop experience of ubuntu and likes it's been atrocious with a lot of moving parts.