Does Sanjay Leela Bhansali Go Too Hard On His Actors?

Alia Bhatt was recently hospitalized due to exertion after working on the sets of Gangubai Kathiawadi, SLB's film. She was only in the hospital for a day, and has now fully recovered. But don't you think Sanjay Leela Bhansali is too aggressive with his actors? Previously Ranbir Kapoor, Alia's boyfriend, also mentioned that SLB is a "hard task master", and said "I had to kneel down on sets and he used to beat me". He said that happened when he was an AD for Black. For Saawariya, Ranbir had to do around 50 takes to get one scene right, almost breaking his back for it. The next day when Ranbir returned to set, Bhansali made him do another 70 takes of the back-breaking scene because Bhansali thought it was not perfect. Ranveer Singh also spoke about SLB and said he does get very angry on set if the actors do not perform to his expectation. Only his muse, Deepika Padukone, is safe from SLB's wrath, because she follows his instructions perfectly. Sanjay Leela Bhansali requires a level of perfection from his cast and if things don't go his way, it seems like he gets a little angry. Do you think that SLB goes too hard on his actors, or is this aggression valid since he does create some of the most beautiful films?