Come on. There is no grand plot to purge conservatives from DoD. There is just a plot to have people follow lawful orders, just like every other smallpox and anthrax vaccination you're also supposed to get, along with a freaking flu shot every year.So - and this is just a hunch, but based on some prior examples - yeah I think the DoD will adsep anti-vaxxers, as a force shaping tool and to easily get rid of people of that mindset (more likely on the right side of the political spectrum, on average).
An example might be the “failed” healthcare supercommittee in 2011-12 that produced years of deep defense cuts called sequestration. Pretty sure in hindsight that deep defense cuts were their end goal all along.
And never attribute to malice that which can be adequately explained by incompetence. Congressional leadership on both sides of the aisle aren't playing 4D chess; they're herding cats.