It's only seen as manly in the modern oversexualised culture, where everything has to be extreme contrast.
Men do have much more body hair on average.
A woman who has as much as a man couldbe considered manly/boyish.
Of course you can find photos of hairy as fuck women on the internet.
But generally, women are not very hairy.
And also, I can only think of one single woman that I know who actually has a beard and shaves it.
It's not full beard, more like a teenage boy neckbeard.
She does have children, so she probably doesn't have a significant hormonal imbalance.
Besides, the modern society sometimes encourages men to shave body hair.
Isn't that too womanly by your standards?