[belorn]

If toxic masculinity is defined by exaggerated gender role behavior that is a negative for the individual and society, then toxic femininity should be defined in the exact same terms.

Female gender role is strongly associated with motherhood and personal appearance so toxic femininity could for example be exaggeration of those aspects. Two examples would be possessiveness of children and the abuse of plastic surgery.

The question is why people are using such gendered terms that so easily get perceived as derogatory if all we want is to a term to help discussions around exaggerated gender role behavior that causes negative effects. Personally I avoid using both and see those that do as pushing an agenda rather than addressing the core issue that we have gender roles and those have a negative impact on society.