It is 100% correct. The amount of raw crosses for a fullback is pretty staggering in the grand scheme of things, considering our next ranked wide player sits on 44. (I originally raised the conversion rate so fair play there.)
If you apply the eye test, in my opinion it amounts to a lot of brainless fanging the ball anywhere he can. For someone who has a very high usage rate in our team, I think it is an area to look at in the off season, whether we adapt his attacking role from fullback or we look to bring in an option to deputize or maybe even bump him down a peg on the squad rotation.
Jose adores him though and has got a solid body of work out of him this season.