The term "toxic individualism" doesn't mean that individualism is inherently toxic, like "toxic masculinity" doesn't mean that about masculinity in the general case. These terms mean the over-expression of their worst aspects.
This comment seems to be both reductive and in bad faith.
Of course there is an idea of non-toxic masculinity that doesn't just equate to !masculinity. People love to bring up examples of non-toxic masculinity in media. Someone on reddit has even compiled a megalist of examples of non-toxic masculinity in film: https://www.reddit.com/r/MensLib/comments/eb0ir1/a_megalist_...
Using the term "toxic" to describe things is an issue because people have an immediate negative reaction to it and go on the defence. Wording matters a lot and I'm unsure why there's such an insistence on calling things "toxic" when other words would both better describe issues and cause a less visceral reaction.
Most people don't make a conscious decision in how they react to something emotionally, it just happens. If you want people to take what you say seriously you have to consider the PR side of things.
