I will use /Mediaserver as that seems to work.
I do not know what Wayland is, I use Debian Xfce.
You're not using wayland then. It's a newer compositor/display server that some desktop environments or window managers use or support (Gnome, KDE, sway, etc.). It's still new enough that the software support and tooling for it isn't as mature as the older X11 display server, especially because every wayland implementation is a little different so its a moving target (although pipewire will help with some of the current pain points).
If you're using xfce you're definitely not using wayland and it isn't even on the roadmap for xfce development at the moment so you can ignore those issues for now. Or maybe you can ignore them forever: I say this with affection (as a sometime xfce user), but I feel like by the time xfce gets a wayland port most of wayland's remaining problems will probably be solved :-)