Even assuming that's true, it doesn't follow that every literal interpretation should be or is understood as pejorative, which leads to the question of why this one should be understood that way.
Given that toxic masculinity has specific definitions and specific criticisms to offer that distinguish critically targeted behavior AND also has associated discussion affirming desirable masculine behavior, it makes much more sense to treat it as a specific technique than a general attack on masculinity.
Unless, of course, you think that things like bullying or other forms of social violence for the purpose of establishing personal dominance or personal entertainment is part and parcel with masculinity. Which sounds kindof, I don't know... poisonous or something to me.
> bullying or other forms of social violence for the purpose of establishing personal dominance or personal entertainment is part and parcel with masculinity
For those who think neither of those has anything to do with masculinity, using the word masculinity to describe it would be wrong. One could be a bit colorful to call it a poisonous use of words, ie injecting an harmful substance into the language.
A few decades ago researchers looked at how language get used in conflicts, and they had a major discover. The most effective way to enable people to attack other people is to describe other human being as being less than human. Toxic waste. Insects. Poison. Garbage. Language that dehumanizing groups of people and dehumanizing their behavior is almost a requirement in order for human on human violence.