What percentage of HN users are “ghost banned”?

I use two accounts on HN because I have two devices (like any normal person). After a year I just noticed that my "mobile" account has been ghost banned and for the last year I was essentially just talking to myself.

If you comment or post to HN are you ghost banned? My guess would be that A LOT of people here are in the same boat.

It would be a lot nicer of HN to just ban your IP or at least let the user know.