It's not the 60s anymore, the US should do better than just an Apollo program 2.0, going into crazy Mars expenditures without a plan would guarantee you just that.
The inspiration should be the Manhattan Project and the Marshall Plan.
In both instances the super-geniuses with type-A personality got you to the Promised Land, but then what happens? They move on the next shiny thing.
The Manhattan Project and the Marshall Plan were able to continue because once the super-geniuses got the US to the Promised Land there were operators who got to keep the project going.
Generals, admirals, ambassadors were more than willing to dedicate their lives as operators to make sure that the U.S. Govt and its citizens would actually get a ROI on the 2 endeavours. You can say it's patriotism, status-seeking, the thrill to have authority over powerful weapons, borders and huge economic resources. Whatever the reason there were operators at the helm once the super-geniuses got out of the picutre.
The Apollo Program had the same amount of super-geniuses but no operators to take the helm to secure ROI, that's the reason why the U.S. Govt. had to pull the plug on the whole program.
That’s fine. Wanting to colonise Mars, and being willing to work on it, and not on say crypto or ad serving or military pursuits, is still a net win.