The latter happens relatively often, and it confuses people into thinking they've actually been added to a ping list when it's really just a one-time thing. The former, however, ought not happen at all, unless you've specifically requested to be added.
(I will take this opportunity to add my usual complaint that ping lists would be largely unnecessary if we could have bump lists back.)
No big deal, but I understand where this guy is coming from. We're not talking one time pings here.