Helps that he basically runs the company like a dictatorship, since it has dual class stock and he controls 33% of the voting power. Trian actually tried to go after Comcast in 2020 but ran into a wall quickly once he realized dual-class stock doesn't trade the same way singular class shares do.
That said, the calls to get rid of either Sky or NBCUni have been growing in the last few years. And he's been listening: he tried to spin-off NBCUni and merge it with Electronic Arts (yes, really) with him still in control a year and a half ago, but that fell apart.
It's unlikely Disney investors like Peltz or were enticed by him in this...awkward interview this morning but they may vote for him in March anyway just to spite Iger and the board.