Good comment. In addition addition to a very complex dividing line between toxic and healthy, there is the larger problem of creating phrases of the form "toxic X" or "healthy X" where X is an identity. There is no part of our culture where X is allowed to have the value of "blackness" or "gayness" or "femininity". The wording itself reduces the entire issue of
problematic human behavior to the mechanical act of decoding a persons identity and then applying stereotypes. In that sense, it very much reminds me of astrology, which asserts that it can say something meaningful about you once you tell your birthday. I say that this astrological assertion is precisely as stupid as the identity-based assertions.
Bonus: here is the actress from the Hanna TV series, describing the father character from the show, the man who sacrificed his life to protect her from extraordinary threat, and Esme Creed-Miles lazily throws out the "toxic masculinity" label. The phrase is just a reflex, at this point, and has no meaning: https://www.youtube.com/watch?v=OPMdEtzoj-Q&t=433s