It's just a reminder, not a criticism.  It could also be that Nerevarine forgot and thinks he or she is waiting on a post when it's really his or her turn.

I had one person freak on me harsh for not posting for two weeks.  I thought it was his turn and it was mine.  Honestly I was waiting patiently for him and had no idea.  All I needed was a reminder, not a lecture and boy was he vicious.

Ah, such is the internet.