Fast trips mean higher vehicle turnaround and increased safety for crewed missions. This is very good regardless of who's doing the flight. NTRs will be needed as power sources in the outer solar system anyway, as PVs aren't as powerful out there. SpaceX's entire business is based off low turnaround to/from LEO, so this is the natural path up. This works out to SpaceX's advantage anyway. If the government commits to 4 Mars trip every year, that creates 4 opportunities to launch probes, mining equipment, orbital human facilities, and ground-based robots.

In the nearer term it means a regular Moon flight every week or so, and a regular long-endurance moon mission once or twice a year. Great opportunities to demonstrate SpaceX-branded habitats, moon trucks, and heavy industrial equipment needed to build things on the moon. It is the perfect chance to show how SpaceX can work with others inside a greater mission, such as a true Mars human transfer vehicle or Mars orbital lab.

(or we get a Trump Presidency and all this money goes to Hummer H4 production instead)