It is most definitely not. SpaceX is certified to launch whatever they can given their launch vehicle capabilities. There is only a very small number of people

It is most definitely not. SpaceX is certified to launch whatever they can given their launch vehicle capabilities. There is only a very small number of people at SpaceX that need secret clearances for DOD or AF missions, and it’s mostly mission managers, not even most engineers. There’s a point of contact regarding the payload adapter (how the satellite hooks and talks to the launch vehicle). But again, that is a very minor thing. There’s maybe engineers with secret clearances working on military projects, but those are isolated projects. And if you need secret clearances they government will happily screen your employees, or you poach people who have them. They are most definitely not a hindrance in the big scheme of things.