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Debian is great. It has generally been my go-to for years. It's efficient, configurable, stable, but sometimes a little out of date (stability). Debian is the base that Ubuntu was built on, and so it has generally been my second choice. I've used Ubuntu on and off to see how I like it since the early 2000s when it came out. Where we are at now, I am leaning more towards Ubuntu as my DD. It's still very much like using Debian, but with some defaults and conveniences that I like. While they are both stability-oriented, Ubuntu does sometimes have more up-to-date packages, especially with their interim releases.
People rant about Snaps, but I'm not bothered. If I don't want to use them for something, I don't. I am using the Discord Snap to try it out and have had zero issues. I was intrigued when LMDE was announced. I don't think I ever gave it a go, but I have used the regular Ubuntu based Mint. It's all Debian to me, all these Debian derivatives. It was a tough decision to leave Debian 12 on my desktop to try Ubuntu 24.04. I still frequently consider going back to Bookworm.
Anyway, I had used it since the day that 12 released and Steam was solid.
I might have had to turn off GPU accelerated webviews in Steam settings.. or maybe that was an old version? It caused some freezing viewing user profiles from the friends list or something, with my AMD RX 590. But the more I think about it, I believe that was an old issue that has since been resolved.