I’ve looked it up and it’s even uglier and I can kinda understand why they did it this way Basically, for their “integrations” they aren’t using any official APIs. Instead they just use the websites and automate them via the Playwright framework. So for each user they have a VM running with a Chrome browser to access the services. So now they have the problem that they need to get their users session cookies into the browser. And the easiest solution for that is having the users access their VM via VNC and just log into the automated browser.
This is such a hacky solution that I’m actually in awe of it’s shittiness. That’s something you throw together in an all-nighter during a Hackathon, not a production ready solution

Not that far off actually, China started producing the first sodium ion battery powered car in series this year

I can confirm that Hyprland also works from GDM

This might sound a bit heretical, but you could carefully pick and match a variety of software and configuration to your individual needs, turning your tiling wm into a fully functional desktop environment, or you could just install a tiling wm into an existing desktop environment and get something useful with like ten percent of the work.
I know that I have done the former multiple times, only to fall back to existing desktop environments again because it’s just a lot less work and often works better, since you don’t have to take care of getting things like screen sharing or media buttons to function.
Especially LXQt and Xfce make it very easy to run a tiling window manager, but you can also find extensions/plugins for KDE or Gnome to make them tile. I’m personally running Gnome with the Pop Shell extension right now