I am a bit relieved (sorry, I know that's selfish!) to hear about someone else having that issue. When I raised this in another forum I got a lot of weird looks and "you need to be more gentle" types of comments... I'm having the same problem with my X100F that I got in February. RCD is way too sensitive and I keep on depressing it while trying to scroll. No such issue with front wheel. I subsequently tried the demo model in a store and it definitely did not have that problem. I am now waiting for a replacement for mine.
Let us know how your replacement works out for you!
In case useful to others, I've mapped the EXIF info for the various film simulations offered by the Fuji X100F.
You need to read 2 tags (FilmMode and Saturation) to get the full information.
I've used exiftool, a command-line tool, to get this. I am on a Mac but exiftool is freely available on most platforms.
(Now if someone could find out whether whether usage of the built-in ND filter is captured in EXIF...)
# exiftool -m -s -f -FilmMode -Saturation *.JPG
======== Acros+G.JPG
FilmMode : -
Saturation : Unknown (0x503)
======== Acros+R.JPG
FilmMode : -
Saturation : Unknown (0x501)
======== Acros+Ye.JPG
FilmMode : -
Saturation : Unknown (0x502)
======== Acros.JPG
FilmMode : -
Saturation : Unknown (0x500)
======== ClassicChrome.JPG
FilmMode : Unknown (0x600)
Saturation : Normal
======== Monochrome+G.JPG
FilmMode : -
Saturation : B&W Green Filter
======== Monochrome+R.JPG
FilmMode : -
Saturation : B&W Red Filter
======== Monochrome+Ye.JPG
FilmMode : -
Saturation : B&W Yellow Filter
======== Monochrome.JPG
FilmMode : -
Saturation : None (B&W)
======== ProNegHi.JPG
FilmMode : Pro Neg. Hi
Saturation : Normal
======== ProNegStd.JPG
FilmMode : Pro Neg. Std
Saturation : Normal
======== Sepia.JPG
FilmMode : -
Saturation : B&W Sepia
======== astia-soft.JPG
FilmMode : F1b/Studio Portrait Smooth Skin Tone (Astia)
Saturation : Normal
======== provia-standard.JPG
FilmMode : F0/Standard (Provia)
Saturation : Normal
======== velvia-vivid.JPG
FilmMode : F2/Fujichrome (Velvia)
Saturation : Normal