Why are the superstars quiet about Sushant Singh Rajput death? Why are the big stars not talking?

It has been over 2 months since Sushant Singh Rajput died, through Supreme Court's new order CBI is going to investigate the case. In the past two months a lot has been said about his death, many from Bollywood filed their statement but the silence of the big stars of the industry speaks volumes. Why do these super stars  stay silent on every important issue, what is the reason for this, see this video.