When Debian's APT network package manager happened, that was pretty new and unusual. Imagine hearing about a package, typing a shell command, and Debian probably had the package, and it was installing. (When I was using Red Hat before Debian, there was a set of Web sites that I'd have to use to find packages, in a way that now seems naive and reckless: "https://www.neilvandyke.org/lab-linux-1999/#software".)
The package ecosystem is more mature now, and it turns out that Debian Stable almost always has what I need, so I still get the APT experience. (I even got the closed Nvidia CUDA stack from Debian Stable `non-free` repos, the other day, and it just worked. Maybe a little too easily and well, but that's another matter.)