I agree. It's bragging about a bunch of things that either aren't part of KDE or aren't really gaming. It's like if MS made a "Gaming on Windows" page to advertise solitaire, minesweeper, pinball, and Steam.
Yeah, this kinda gives the impression of this old stereotypical Linux image as a gaming platform where we all just play Tux Racer and weird Solitaire clones.
I recently learned about Sysrq + f to kill running processes making the computer hang. Before finding about this I had to manually restart the PC via power button. I wonder if KDE should make it easier to enable this feature considering they have something to kill processes already but it’s less powerful than Sysrq.
Plasma is the best for me also. Ever since GNOME 3 went "convergence," I've been looking for a traditional desktop experience. Xfce, cinnamon, and budgie all have good things going for them. I choose to use KDE because I love the customizability of the desktop and the settings menu is easy to use. The theming is also very nice on KDE.
Default gnome has a great keyboard based workflow or the option for a pointer-device based workflow. It doesn't copy the outdated windows workflow and actually succeeds in pushing its own ideas.
I've been using it for a long time. I've personally found that there is essentially no impact on gaming performance--or if there is, it's so slight that it's totally negligible on midrange hardware, especially with feral gamemode. It might be more impactful on low spec PCs, I would assume, but I'm not sure of that. In my case, it's plenty lightweight and offers lots of customizability.