Nope. Well Crutchlow knows A LOT of curses in Italian but doesn't speak the language
Very few non-Spanish riders speak it. Zarco belongs to those few, as well as Tatsuki Suzuki (Moto3 rider). No one else comes to my mind as of now.
I have been lucky enough to properly "live" the paddock a couple times, and even I was blown away by how many people in there are Italian. Even in the Japanese teams. I guess the Spanish just learn it cause they hear it so much in the paddock, while the English-speaking can not learn it by simply hearing it since there basically are no words in common between the two languages.
This would also explain why all the Spanish speak Italian, and none of the Italians speaks Spanish (except the youngsters from Moto3 who usually move to Spain to race CEV between their 14 and 16 y/o).