Just start using the word emasculated to mean the undermining of anyone's identity, and it will lose its gendered connotations. You can't be emasculated if you are secure in your identity. Classically it has been used to re-enforce "masculinity" in those with insecurities by those who are insecure. Maybe this is a reflection of the fact that one of the tenets of masculinity is self assurance and security, which hasn't been as true for femininity. Femininity has different standards which get challenged through other kinds of social re-enforcement.