I was first doxxed in 1991 in some Atlanta-based Prodigy board, and since then, really, I never gave a whit about having an anonymous internet profile. Makes my life easier.
And as to whether people around me know, of course they do - I don’t keep the SDMB private and commonly would send my profile information (and a link) to women I dated. “Here, read all this and if you still like me, you know how to reach me”. Inna has a login, some other people I know have logins, maybe even my sister(s).
And my kid? Yeah. Not only does she know, I created a thread which compiled 18-odd years of threads and posts about her and being her father, and sent her the link, saying “read this!” Did she read it? Who knows!