I do not think Mac will come out. He seems to be in such a chill place. His AMA Reddits are funny and charming. I hope that he is a peace with his part of MJ’s history and does not want to unearth it again.
I am also not 100% sure he was molested. MJ was such a conniving bastard, it would not shock me if he treated Mac differently to give MJ credibility.
I would not be surprised if other Jackson brothers were also molesters. I have no doubt MJ and his siblings were sexually abused as children, and their father sanctioned it (he totally gives me the creeps). History has shown abused becomes abusers.