Good catch on this one. Just goes to show, as soon as you write something down, it's not secret.
In the past, I've approach sites (like reddit) with the idea of staying wholly anonymous, but I think that's actually backwards. When I moved over to hubski, I began with the assumption that everything I do and say here will be connected to my real name (and have even posted links to my medium page, which does use my real name). It's allowed me to much more conscious of what I put here, and means I'm relying on my own feelings about what I'm willing to share rather than a 3rd party (no matter how capable and well-intentioned mk et al. may be).