why does hegseth think war iniranis a good idea?

Because Kevin Hassett and Scott Bessent think it's terrific that American spending with credit cards is "going through the roof..." on things like petrol, food, and daily necessities. Oh, and because Todd Blanche thinks automatic weapons of war should not be banned for civilian use. And yes, because taxpayers should pay $1 B (USD) for a ballroom.

whats left of the IRCG isnt 'iran' get on board or get off the track

Because he thought it's a slam dunk, or more like Trump thought it was.