From what I've read on this thread about SB's non celebration, to be fair, I haven't seen that he has received "stick" in my opinion.
In the main there have been observations, mine included, on his overall body language that has been questioned and rightly so.
He is a talent, one that we would miss if he were sold. But there must be reasons for halting contract talks with him and leaks from the dressing room about his attitude, if they are to be believed.