Your definition is not what the average person is going to think of when they see or hear the term "toxic masculinity".
Keep in mind that there are 3 types of people in this context:
1. People who know and understand the term as you described it.
2. People who "know" an "incorrect" (according to academia) definition of the term.
3. People who have never heard the term before, and draw their own definition based on where they saw/heard it and who it came from (often leads to #2).
The vast majority of people will fall into #2 and #3. I'd guess more than 99%.
I think that it's generally harmful and damaging for you to cite the original academic definition, because that just lends weight to the colloquial definition/understanding of the term as being valid.
The term has been hijacked. If you care about the original definition, you need some new words.
People aren't going to remember the difference between the "real" definition and the definition that most people use in common discourse. They'll just remember that "toxic masculinity is grounded in academia".
BTW as a side-note, I have never heard anyone say "toxic femininity" out loud, and I very rarely see it used online. People who recognize some form of "toxic masculinity" would either have no idea what you meant by "toxic femininity", or they would believe that it was associated with misogyny.