Again, none of that is a failure of Wayland, it’s a failure of Zoom to run on Wayland. One day, and this is in the next 5 years, Wayland-only apps will refuse to run on X.Org and the situation will be reversed.
You can share screen perfectly fine under Wayland. Many apps use it fine, and even in case of Discord if you use it with a browser it’s doable.
No Wayland dev can fix an issue that originates from lack of app support. There has been many Wayland issues through the years and trust me, I know, but how do you expect them to fix Zoom? Acquire the company and take it behind the shed?