Earlier quoted context omitted.
This is just a caricature. It's like saying all women's spaces are bad because some female influencers tell their massive followings that men should pay for expensive shopping trips on the first date. This mischaracterisation through cherry picking is destructive.
Who said all men's spaces were bad?
Well, I suppose in this context the "manosphere" is a name given to a lot of men's spaces on the internet, and so is immediately reviled. And in general any men's space in real life is criticised for not letting women in. The reverse is not true for women's spaces.