That footnote is indeed recent. Wayback archive indexed the page on the 1st of December and it wasn't there: https://web.archive.org/web/20201201093941/https://fujifilm-x.com/en-au/support/compatibility/software/x-webcam/
The hardware of the XS-10 is brilliant... the software is beyond awful.
If this feature is working as intended then I despair. Between the camera controls not responding when connected in x-webcam mode and the x-webcam controls not working the only way to change settings is to unplug the camera, make adjustments and reconnect. I had Fuji down as caring about the user experience but if that's what they consider acceptable then I have to question their competence.
PS. Still not working with the freshly release x-webcam 2.1 w/ firmware 1.02.
