I'm no Massie fanboy but
hes just saving his own skin
By tanking his career and ostracizing himself?? He's been pretty consistent in the two things that made him a target for Trump (Epstein and the deficit), it's not like MTG who fled a burning ship.
He's still very much a Republican and would never get my vote because of the rest of his opinions but he's been on the right side of history with those two things from early on.
It's a low bar but he pushed harder than 99% of politicians on either side.