I think because it is so naturally and culturally engrained into society that men have a level entitlement and superiority, that they wear t-shirts as a kid that say "hero" "little boy, big ideas", whereas girls have "big smile" "little princess" etc. Boys tend to have activities their parents bend over backwards to facilitate, such as sports. They are encouraged to aim high for careers, a boy is praised far more highly for being funny, gentle, or generous compared to a female counterpart - that when something comes along to challenge the status quo, such as feminism, or people daring critique aspects of masculinity that can be damaging, it is seen as an attack.
It is comfortable for them to believe that all the things alpha males or Andrew Tate preach such as having multiple hot girlfriends, a subservient wife, someone to pop out kids for you and for you to dedicate your time to being ripped and rich is their entitlement and anyone who dares points out the negatives or how those ideologies are hurting women, are just attacking 'masculinity' and taking away their rights. Boys are only retrospectively saying that they need a role model, as the alpha males that have come along have appeased their belief regarding their entitlement, thus making them happier.
Combating that issue is difficult, it is in the nuances on how you raise a child, even the subtle things such as how they hear their grandmother talk about their sons achievements in comparison to their daughters for example, the language they are exposed to, the real-life attitudes of those around them, bringing boys up in a household where they see teamwork, equality. They learn to identify behaviours that are selfish and unfair from an early age and be able to rationalise and challenge them. They learn to recognise how to take constructive criticism, how to recognise flaws in others. It comes from upbringing and a great societal effort.
They do not need a celebrity role model to learn how to be a 'man'. All Andrew Tate does it capitalise on a bunch of boys who are unhappy and frustrated that they don't get their own way all the time.
It's difficult, that's why it's my opinion that I would have more anxieties raising a boy compared to a girl.
Both women and men can be victim to masculinity, no one is a victim of femininity. With daughters, you have to contend with minimising the risk that your daughter will fall victim to 'toxic masculinity', with a son, you have to contend with both the risk of them falling victim and being a perpetrator of toxic masculinity.