Thought i'd try this again, to see if recent Big Sur OS updates had made a difference. It still does not work, and to be honest I'm very disappointed in Fujifilm, that they have yet to fix this issue 8 months after the launch of the camera.
With the recent announcement of the GH5 II, they really ought to get their act together, as other camera manufacturers are streets ahead in this area. While this software does work on Windows 10, the M1 Mac has caused a dramatic shift in the numbers of Mac OS devices, and this is something Fuji ignores at their Peril. Users will jump ship, if they feel a camera manufacturer has not updated its existing cameras on a regular basis. Fuji is lacking here recently, for instance, my premium X100V does not have the autofocus and interface updates the X-S10 enjoys, despite being identical internally.