The fact you're griping about implementation details like pipewire makes me think you also tried micromanaging your env and broke something. If you use a fresh install and leave everything default, I'm sure it would work for you like it does for everyone else. I use KDE too btw.
alt Hacker News
Here's a post from 2023 where the majority of people say it just works, except for one guy who tweaked his env and broke it. https://www.reddit.com/r/kde/comments/18gfffw/is_zoom_still_...
The fact you're griping about implementation details like pipewire makes me think you also tried micromanaging your env and broke something. If you use a fresh install and leave everything default, I'm sure it would work for you like it does for everyone else. I use KDE too btw.