Honestly, it feels like a way to extract a social/legal designation and apply it in ways that people intend to be some sort of factual, universal truth. I am an AMAB manly male man, but I have a risk factor for osteoporosis pretty on par with my mom. I may be an AMAB male man, but clothes designed for women tend to fit me better (yes, I’ve seen people use AGAB language for clothes shopping lol). Just call me a man if that’s what you want to say.