For a while my job was part of my identity in the way you describe not because "lol hypercapitalist American" but because I like computers and computers also pay the bills. I was writing software and doing technical stuff from a young age because I enjoyed it. I fell into doing it professionally because it was an obvious path. It didn't help that when you do this older people like it because they can use you as free/cheap labor which an impressionable kid might mistake for actual praise. It turns out I like other stuff too but it's hard to talk to people socially about obscure New Wave bands and continental philosophy and 90s neo-noir films whereas computers and gizmos and apps are a common frame of reference.

I guarantee you that these people exist in other countries too. Not everybody is a tech bro strawman.