I assume searching for [employer] could direct someone here vs searching for knz/me specifically would take you to my HN profile page.
I'm not ashamed of anything I've said on HN but would rather not have people just searching for my employer ending up here (especially since I work in an office that routinely deals with sensitive political and community issues). It's a minor amount of (perceived) anonymity vs stating my name/job title/employer here!
My profile has a link to my personal website though and it's the current employer listed on the associated LinkedIn profile.