The term toxic masculinity originated in the manosphere and was coopted by feminists.

Originally it described male behaviours that were harmful to ... wait for it .. the men themselves. Specifically male virtues like stoicism and assertiveness taken to such extremes that they end up hurting those that display them. None of this was about women.

Then the women came and redefined it as male behaviour that women don't like. The whole term is either to be rejected or to be re-redefined to it's original meaning. The latter won't happen, so rejection it is.