Not anymore. Now women can't depend on their family or partners for subsistence. If they do embrace their femininity, become softer, or forego job time to be more time with children, they earn less, they provide less for their kids. And worse, what if the relationship ends? What then? Now she has to be full the provider. A typical man role.
So it's too big of a risk to be soft and feminine.
I don’t know what your age is but this is far from my experience.
In a professional context, no more or less playful / joking than men (this varies a lot by context, of course). But outside work, yes, in public, sure.
I don't have an answer as to why that is, but the "scarcity" theory is consistent with my observations. The "social organization" theory is not. That's not to say that "scarcity" theory is correct, only that it isn't contradicted by observation in the same way that "social organization" theory is.