Fedora Rawhide with GNOME on my desktop, and Arch with GNOME on laptop (only because there are fingerprint reader drivers for my T470s on AUR)
Did it yesterday, and also removed all my comments and posts, but I didn't post that often - I have probably made 30-40 comments and posts in 2 years. However, I still use Reddit on my phone with Relay but logged out. When Reddit shuts down its free API I'll probably switch fully to Fediverse.
My main gripe with most Linux DEs is inconsistent UI and lacking app ecosystem. For now, only GNOME is addressing these issues with GNOME Circle (I already like and use apps like Spot, Paper, Amberol, Warp, and others) while having a good-looking UI. Also, GNOME is the only DE with usable trackpad gestures. If COSMIC is going to use GTK4 for UI and implement trackpad gestures similar to these found in macOS or GNOME, it would be probably my main DE.