Minorities too. There's a reason he was harping on shaving standards. Some people with curly hair get ingrown hairs when they shave every day. Causes infection and scarring. You can get a "no shave chit" - medical can excuse you from needing to be clean shaven.
Its mostly black men with these chits.
He's trying to give anyone who wants one an excuse to remove any one who isn't white enough (and male) from serving.
He's talking about getting rid of military members who can't shave due to medical reasons.
context
People with curly hair can have ingrown hairs from shaving. Most people with no shave chits are black.
Don't let him trick you into thinking this speech is just stupid. Its stupid, but he's also trying to give generals plausible deniability to remove minority military members and women.