But now I'm seeing more items target Ubuntu first. For example a colleague at work wanted me to get an overview of Swift -- for the longest time I couldn't get it for RHEL or Fedora, but could for Ubuntu. And a number of tutorial articles assume using Debian or Ubuntu. My main issue with Debian based distros is the package manager doesn't track enough metadata about packages (a lot is stored in a sequential log file that can get purged/rotated out, but isn't in a package database, such as install date/history/rollback information). That, and packages on RHEL / Fedora tend to install without needing input (they have sane defaults that you customize after), they also don't auto-enable when installing (so you have more control), etc.
Long before it became available on Ubuntu you could very easily run it on Arch. Same for many other applications. It's pretty sad that a bunch of pimply children managed to meme it into a thing that a civilized person shouldn't even mention these days, because the software availability situation is above everything else out there (thanks to AUR and incredibly simple package format — you can write a proper package in a few minutes).
On my laptop and desktop, I run Fedora and Arch, though, so keeping that consistent with my servers might be nice.
For that reason, I’ve been thinking of kicking the tires on Debian testing / sid for the laptop.