none of Ubuntu’s many projects has ever become a long-term, distro-agnostic alternative to whatever it was supposed to replace, suggesting either low quality or insufficient effort
I’d add irrational hate against Canonical to the list of possible causes.
systemd was in the hands of one single guy with very controversial ideas in the beginning. It wasn’t really better than Upstart, yet got adopted by more and more distributions over time.
Unity worked smoothly when Gnome-Shell was sluggish as hell on the same hardware.
And you have fixed versions every half a year with a set of packages that is guaranteed to work together. On top of that, there’s an upgrade path to the next version - no reinstall needed.
Ubuntu’s slogan is “Linux for human beings” which fits quite well, I believe. Otherwise, it wouldn’t get recommended to newbies so often. If you want all the nerdy stuff, there are plenty of other distributions to choose from. 😉
Once the downloads work again, this might help:
https://developer.microsoft.com/en-us/windows/downloads/virtual-machines/