I am using Fuji instead of Fujifilm because this is how I refer to this camera. ... The photographers I spoke with about this camera all use the same terminology. My goal is to use the language photographers use.
I agree that it is a very common error, perhaps worthy of being considered a nickname, and not likely to cause much confusion. Then again, I dount that saying or typing "Fujifilm" would cause any confusion, and my style is to be more precise in written (especially published) communication that in normal speech.
I was mostly commenting in the spirit of these forums of seeking perfection in all things!
P. S. It would seem to be past time for the company to change its name, but I understand it still makes lots of money selling transparent plastic films, without photographic emulsions on them.