You write well but use a broad brush. Your generalisation about the worrying decline in men's masculinity, manifests itself mostly amongst the chattering educated classes in all countries. These same people are overrepresented in the 'entitled' generations. My experience as someone who has been lucky enough to have worked in many countries, chosen to live in Thailand with my Thai wife , but have five children in England and Australia, is that they, their friends and the children of my ex work colleagues behave [for the most part] just the same way as I did in their elationships. The girls are a little more confident and noisy but have no need to embrace 'me too' movements. The men have loads of respect for ladies, with a helpful dose of 'Laddish' behaviour. You worry too much. Too much influenced by what you choose to read perhaps.
A more serious issue is the decline in male virility; their increasing inability to get the girls pregnant. This compounded by the girls choosing to delay having children. When I read about this, I do worry about the future.