• trying to install any software that isn’t already packaged explicitly for Ubuntu is a nightmare because there is no equivalent of the AUR for people to push build steps to and you’re quite often left guessing what dependencies you need to install to get something to compile

In fairness it does have the PPA system which predates the AUR and does provide a good job of providing third party amd semi-third party software.

But you’re right that Ubuntu has sold out on building snaps for software instead of ppas.