They have been saying for months they are nevertrump. That means not in the primary or the general, or by extension after November. Why are you surprised?
I’m not really surprised, but their reaction is like the mad man who kills his wife when she leaves him so “no one else can have her”. In this case, it’s their POWER they are not willing to give away to someone who wants to use it to better the nation rather than feel important about themself.
Consistency is out-moded!