An integrated GPU isn't great, but it should run alright still. I think I disabled the dedicated GPU on the Thinkpad I was running and it still ran smoothly.

I don't know what your circumstances were with your specific laptop, but to paint KDE as, well, shit, just because it ran badly when you tried it is not cool. Especially in the face of other people who have had fine performance on the slowest of potatoes.

Maybe your CPU's iGPU is a poor bin, maybe you ran up against a bug in something which fucked performance, maybe your HDD was failing or just slow (if it was mechanical), who knows? Point is your one laptop is not representative of all laptops.

Display server = Xorg/Wayland, not the monitor...

Is there any particular reason you felt the need to resort to insults? I like KDE for a reason, because it does what I want and it runs well. I'm not blindly devoted to it like it's some kind of religion. Hell, I actually prefer GTK as a library over Qt due to it's C-based nature and I used to daily drive Cinnamon, then MATE.

KDE release nomenclature is also easy. Higher number = newer.

I... know the Plasma 6 release is new? Why is that relevant? We're both talking about Plasma 5, and Plasma 6 is basically just mega-improved Plasma 5 anyways.

You know what, if you want, tomorrow I'll get you a video of Plasma running on my single core 1GHz potato laptop if you like.