Yes the online model has those filters. Some one tried it with one of the downloaded models and it answers just fine

Yes

The best part is that it’s open source and available for download

Not entirely, there is an issue with sharing when you have multiple monitors. If you try to share a monitor, it shares all monitors stitched together

Is this only for wayland or does it extend to x11?

Buy it, own it.

Started with gnome but stuck with KDE. Gnome just kept frustrating me and I had to do things their way or not at all.