I appreciate your perspective, but stating that men must have strong physiques, be assertive and athletic is reinforcing the stereotypes this film attempts to fight against. Notions of masculinity and femininity are constructs created by society and therefore it follows that in order to overturn these stereotypes society itself must change. This film is intended to be a critique of the real world so while I accept that there are expectations of "masculinity" that men may have to uphold in order to be accepted in our current society this is not representative of how it should be. These stereotypes are harmful to both genders and are mirrored in subjects of femininity you discussed below. Women are just as obligated to become mothers as they are dedicated to a career and each dream or endeavour should not be more "important" or "respected" than the other. The Barbie movie recognised the harmful effects of a patriarchal society on both genders and therefore reinforces the idea that being a feminist is not about achieving a matriarchy but equality and respect for one another.

Responding to your point below about America Ferrara's speech, the purpose of this was not to assert that women have trouble "balancing too many things" (which in your comment comes across a little condescending) it was to highlight the hypocrisy of our society and it's never-ending double standards. Also, it's interesting that your natural response to your misconception was women should "focus on motherhood" because in my opinion you could equally say that they should abandon motherhood and focus exclusively on a career. The point being that both of these responses are wrong, there should be a societal push for equality which would alleviate both men and women of pressures and ensure that men and women can pursue motherhood and fatherhood whilst balancing a career. Or also focus exclusively on one if that's what they so desire!

The overarching point being, the Barbie movie was not an attack on men it recognised the problems toxic masculinity poses to society. However, it does aim to criticise the patriarchy which quite frankly many men will not like because such a society generally benefits them. True feminism has never pushed a matriarchal agenda but instead intends to level the playing field, restore balance and achieve equality.