Young Southern White men make up the bread and butter of the military. They have been the target of recruiting campaigns for decades upon decades. This group has collectively checked out of a society that has nothing but contempt for them. When the highest levels of the government and half of the political establishment have nothing good to say about you, opine about how "toxic" your existence is, and openly laugh at your struggles... who would want to put their life on the line for that? When patriotism, their basic existence, etc. are derided as "fascist", then why even give a shit? When you're suffering from record levels of depression, dying from suicide and drug overdoses at rates never seen, still being openly discriminated against and laughed at, supporting the system that not only allows, but encourages that behavior is ridiculous.
Effectively, the US Military is experiencing a variation of "go woke, go broke". Guess they couldn't find enough Emmas with two moms to fill their ranks. I guarantee we'll see the US government start to peel back DIE initiatives to fill their ranks back up.