The point is, their hatred is not new, the evil deeds they perpetuate and support now were always what they wanted. Trump empowered them but their hatred will outlive him. Expecting the cult to break apart when Trump dies is naïve. They will back any Republican who hurts who they hate. Bet on it.
You are correct that they have always been and will continue to be hateful and do evil deeds. None of the rest of MAGA has the charisma or power to control them very well, like Trump. It won't magically end, but it will taper off to a point where we can fight it better.
The hatred isn't new. But do you think JD Vance has the ability to galvanize the cult? MAGA doesn't even like him. The "attraction" of Trump is that he is authentically a terrible person. Vance is an opportunist who will say whatever they tell him to say. Even MAGA sees through him.
My point is that it’s not the MAGA cult that’s empowering the fascism. It doesn’t matter if the rank-and-file are “galvanized”, the Heritage Foundation is still gonna have their agenda and Vance will dance because that’s where the power comes from.