I’ve been IRC for nearly 30 years and I still host my own server for the few friends that are also still going there. We were traditionally all going on Undernet but there’s been massive attacks about 15 years ago and we migrated on our own network.
I also host a web client called The Lounge so that we can view and paste images/mp4s/mp3s directly on channels, with previews, push notifications, and logging.
We made the switch from plain text to web clients a few years ago and it really helped to modernize the experience and keep IRC relevant for us. If it was still only text I may have moved to another protocol. At one point I tried installing a Matrix server to replace IRC but found it too complex for simple chat and just stuck with web clients, like The Lounge or Convos.










Aside from specific dependencies that may want some installed packages even if you don’t use them, yes, it’s fine.
I have used Debian for 15 years, with Gnome 2 then MATE, and now I’m using Cinnamon, while mixing with any GTK apps I can find.