That's true. Hopefully Ozone will be officially released in Chromium/Electron which will make this as simple as that. At least in Discord, XOrg screenshare always gave me trouble.
I believe that this is being fixed soon if you compile Electron with "Ozone" support. Otherwise, I use the current workaround of using OBS with a "virtual webcam" which allows me to stream OBS to a webcam and just use my webcam as the screenshare. Actually ends up working better than any screenshare utility that I've used.
The problem I find with Arch Linux, and this really only has started happening recently, is that for some reason Arch loves to break stuff. My most unstable distribution had to do with Arch. I find that distros like Void and Alpine Linux offer more robust rolling release systems.