because sometimes you need to investiagte an issue that happens only on the production machines, and you can’t/shouldn’t setup debugging on those.

I’ve used Arch on an RPi 2 back in the day. It works just fine, and fun to play with. But at the end of the day, you don’t want things changing every day on a server. I’d recommend going with Raspberry Pi OS; it’s relatively light, well maintained, and just works.