No one is gonna come out and say "we're fascists who commit war crimes" but they spend a lot of time, money and effort fighting against antifascists and people who try to prevent war crimes. The purpose of a thing is what it does.
Hegseth tells his “warfighters” that they must ignore the Geneva convention. The president goes on social media and threatens the destruction of civilian populations (“an entire civilization will die tonight”) as well as civilian infrastructure (bridges, power plants).
Giving your own personnel or enemy personnel the impression you are pursuing a policy of no quarter is itself a war crime.