I’ve seen people suggest Ubuntu without mentioning Kubuntu, but it seems like most people (especially gamers?) prefer KDE Plasma. I’ve seen people complain about Ubuntu’s GUI and lack of customization, but then no one suggests them to try Kubuntu instead. It seems like people just don’t know that Kubuntu exists.
Also as an aside, people often criticize how slow updates are on Ubuntu/Kubuntu/etc, but if you enable the backports ppa then it’s actually pretty quick!
sudo add-apt-repository ppa:kubuntu-ppa/backports
Discussions that I’ve seen (not here necessarily but in general) seem to bring up Kubuntu as a light weight option for systems that can’t handle the more “bloated” vanilla Ubuntu. And it’s why I put it on an old MacBook I had, because other mainstream Linux flavors were a bit much - no, I didn’t try Arch, I’m also still a beginner technically. Kubuntu works great without overloading it. Doesn’t mean you can’t use it on a more powerful system of course.
My only regret with using Ubuntu for my main is some issues I’ve run into with Snap, but I’m learning how to figure that out and find alternatives like Flakpak, Apt, or using an AppImage when it fails me or seems broken. The lack of updated versions has been the biggest problem. Other than that, the OS itself has been running great. I did have to go with 22.04 because 24.04 just refused to install correctly, had 22.04 also given me problems I probably would be with a different distro.