you established an online identity that is apparently persistent across many different websites and also intentionally linked it to your personal identity this

you established an online identity that is apparently persistent across many different websites and also intentionally linked it to your personal identity this has nothing to do with AI or GDPR. the places you gave this information were public. when you do this there’s no way you “ try to hide my real name whenever possible, out of an abundance of caution.” you’re doing all the things any basic infosec lesson would tell you to not do