Having no left answer to masculinity means handing over teen boys to the far right, and effectively kneecapping your primary demographic for what becomes the fighting age of revolutionaries.
It's utopian behaviour.
The left absolutely needs to present something that is attractive to young males interested in the topics that usually end up filling the "masculinity" niche: Fighters, how to get girls, how to be brainier than other people. Andrew Tate is attractive to them for being a top fighter, he crosses over with mra and pua shit that segues boys into the right through the getting girls segment, and Jordan Peterson type stuff fills the last one.
The left has absolutely no answer to this because it's being utopian over the topic. It wants perfection but you simply can't do that with this topic. There needs to be a transition. We need healthy role models that fill the role of masculinity to compete with the far right and then we can eliminate it once they're defeated, otherwise it's just handing hordes of these boys over to them with no effective opposition.