It’s about webrtc, which the support on Firefox is even more poor.

It does actually support several files, folders, or anything.

I stopped using pairdrop/snapdrop because it doesn’t work on native wayland chrome/chromium due to webrtc.

Works fine here.

Well, you can use it from a browser which makes it platform independent and without the need to install anything. Also it’s more friendly for non-tech people.