Edit: Disregard my original reply, updated today and now it works again lol!
It launches for me (and I am in a plasma-wayland session FWIW), and it loads the thumbnails for all videos with no problem. When I click a video as if to play it, it appears to load up the main page for that video complete with play button, but nothing at all happens when I click the play button. Along the way are various api errors from youtube, but I think some of those came in even when things were working for me.
Basically I can get this far for any video:
Was a Gnome user until Gnome 3.
Since Plasma 5, I use KDE Plasma.
I’m just going to share my unvarnished opinions here, I clearly understand that Gnome users feel differently, and that’s okay.
Plasma 6 does everything I want the way I want. I have loaded it (and Plasma 5) on very low end and very high end hardware and found it performant and functional on both, consistently.
You’ll note I don’t claim it to be the best. There are folks out there for whom the Gnome vision happens to be how they like to work, or who aren’t bothered by whatever hoops you have to jump through currently to customize a Gnome environment, and I’m sincerely happy for those people. For them, Gnome is the best.
There are lots of other DEs and of course tiling WMs exist, but it takes me no time at all to have a fresh plasma install working the way I want my computer to work and looking the way I want it to look, and thus I literally have zero complaints. So for the past few years I haven’t even looked at any alternatives. If there’s ever a time that I don’t find the desktop product itself, and the KDE development team’s approach to desktop development, to be absolutely perfect fits for me, I’ll look elsewhere - but honestly probably not at Gnome.