Yes. It is mentioned. But for players like (for instance) Ozil and Carvajal, hard to know how they played in Germany. I know it is not the manager fault for voters lack of knowledge, but I see the exploitation of that for scan voters.
Seems like most managers do actually read posts in here by others who are familiar with those players, though. And it's refreshing to know how well certain players do in certain league, I give you that. Also, seems like most managers don't condone above act, so yeah.. I have no point to make