Which desktop are you running where you can't figure out how to take a screenshot? Maybe some of the more tech-savvy folks here at HN can help you figure it out.
Since you edited your post I'll rephrase my question: Which desktop are you running where you can't figure out how to share your screen? Maybe some of the more tech-savvy folks here at HN can help you figure it out.
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.
All the "micromanaging" you need to do to not have screensharing is one of the following;
1. Don't have a started dbus session
2. Don't have portals installed and setup
3. Don't have pipewire installed and setup
Meanwhile on X what you need is:
1. Have X
So no, it wouldn't work, the reason why it works for those people in the Reddit post is because they use distros and sessions that do all the things I listed that make screensharing not work if any one is not done.
PS: Wayland does have testing protocols for screenshots and screenrecording like 'wlr-screencopy' and some DMA buff one I forgot the name of. But for screen sharing there's nothing that Wayland implements itself afaik.
Are you using a distro that is missing some of those core OS services? If so, which distro does this not work out of the box in 2023? (let alone 2026?)
Or, did you remove some core OS services, and now you're complaining when various things started to break?
Without dbus, X would also have plenty of its features fall flat, it's the de facto IPC mechanism of Linux desktop for better or worse, so it's like "my car won't start if I don't have any fuel" complaint.
That means you're free to use or break it however you want and nobody will stop you. If you put a nail through your water pipes, you'll also flood your PERSONAL house, but the end result is still nobody's fault but your own.