Well the mod was one of the first to reply and seems to be 0k with it plus I don't think he meant to offend anyone, he was just sharing something he thought it was funny.
I remember from the rules the mods don't want members posting messages saying to lock or delete threads, in any case the right procedure would be to send him a PM.
I don't think this is offensive but mmm... don't know. It's up to you.