[still_grokking]

Just to correct the most glaring mistakes:

Ubuntu is based on Sid (Debian Unstable).

You can download Debian installers for Testing.

Usually nothing on Testing crashes, as such severe bugs are considered blockers to move a package form Unstable to Testing. (Of course once in a few years something slips through the testing period in Unstable. But it's than usually repaired within a few hours.)

People are running Sid. (Even I personally wouldn't recommend it.)

But one point of the parent I strongly support:

Debian's web page is a mess. I'm using this system for decades but still don't find anything on the Debian page without the help of some search engine. Also, when I need Linux related documentation I go to the Arch Wiki (and sometimes to the Gentoo docs), even as a Debian user. OTOH, you only seldom need docu, because Debian "just works" for the most part.