You're probably seeing utilitarianism in young men more than minimalism, however they do look very similar. The minimalism throughout the home of (many) single men quite often orients around one "high spec item", like a TV, PC, workspace, exercise setup.

I think in contrast (most) young women's homes have more social signalling in them, homely touches, which has its own benefit equal to or most likely greater than minimalism.

I can say myself that I've always been minimalistic. My flat was bare bones because I treat the place mostly as a place to eat and sleep between spending most of my time outdoors or away from home. As soon as my girlfriend moved in a few years back the flat went from everything white and minimalistic to being colourful. I'm glad there is more colour to the place and that somebody with an eye for it has taken charge of it, but I know if I went back to being single again tommorow I'd go back to not having much around the place.