I kind of understand it though. Their official client is gtk based, there are distros that use qt, other distros don’t use anything at all and instead the user build it. I ended up using wireguard/openvpn directly and just downloading proton config files and it worked greatly.

If they just provide a good server infrastructure and a reasonable app that works well on famous distros e.g Ubuntu, Fedora, it’s enough

thanks, I would love to +1 on it if you find the link