It could be that both artists simply used the same sample, which is totally kosher if they both paid for the rights for it. And even if the dude just sampled “Toy” without permission, which is not legal, it may not be worth Seven Seasons’ time to shut him down. But given that the German song was released seven months after “Toy,” I wouldn’t be shocked if there was some, shall we say, inspiration there.
ETA 5/13/17: According to this (via @Veryhensemguy)
The guy bought the beat here thinking it was legit. Of course, now that he knows it’s not legit, he’s not taking it down, because logic!