The left is afraid to invest in men's issues out of fear of suppressing efforts of uplifting women. It's a fallacy.
To thread this needle, the left can and should frame men's advocacy as a form of women's health issues. Men and women are obviously interdependent... healthy men means healthy women.
Another good first step is acknowledging the biological differences that influence men to behave the way they do (testosterone, being one major factor).. but things like this starts to complicate other ideologies about sex and gender.. it's a mess..