Are they?
I just found this from a 2008 post:
"Most Fender guitars come from the factory with cyclovac (simulated or composite bone). The exception are the vintage reissue and custom shop models which come with genuine bone."
I may well be wrong, but I think what Fender now calls "bone" is actually "tusq," which is a proprietary material akin to plastic that is claimed to possess less dead spots than real bone (which can be porous, which supposedly results in dead spots).
Fender wise guys always welcome to correct my homework.