Then again, I'm not sure if for servers, Debian is still as important as it used to be. I'm probably overly generalizing, but often all you need is a few daemons installed natively (SSH, Docker, firewall), and your reverse proxy and any services are then managed e.g. via docker compose.

There are variations on this, but with the fraction of packages installed via the distro's package manager having become smaller like that, what distro you use for a server should not impact your QoL as severely as it used to I think.

Your point about desktop usage still holds of course.

Debian testing can be a viable desktop though. Obviously it won't be as stable, but you can't have bleeding edge and always stable

"Debian will be where it is now, with the exception being security updates."

This is why I use Debian. It means I can focus on getting work done without having to tinker with new workflows or changing interfaces in the middle of everything. I don't play games and I don't need the latest features. I just want it to work tomorrow the same way it works today, preferably for a long time.