I’m sure this sentiment comes from a place of cis privilege, but I have never heard of a positive trait attributed to “masculinity” that couldn’t be more honestly attributed to “adulthood.”
There should definitely be distinct physical aesthetics for male bodies; several, in fact. Appreciating male bodies for their forms and functions should not, however, determine anything meaningful about the people living in those bodies. To claim otherwise is to be a gender essentialist, to restrict a person’s potential based on their (singular) sex.
“Toxic masculinity” is really just “limited humanity.”