Of course they would. Messi doesn't actually escape criticism. If he has a "meh" game, Barcelona fans furiously argue for many pages whether he's past it or not. The bigger the star, the higher the expectations. It's normal. If people are okay with average performances from a player, it means they don't rate him highly enough to begin with. And at Chelsea, Jose would be the first to complain about Messi, because his workrate without the ball is non-existent, and more often than not, he just walks around until he gets the ball.