I have no idea what happened with the POB mute list.
It's fine in my opinion for any community to create their own rules, mute, add flags, remove flags, have a weird reward distribution... etc.
That's the entire point of tribes.
Each person can decide which tribes to participate in or not.
When someone claims as a HIVE holder they have the right to police ALL the tribes.. That's a turn off to me. Each person just has to decide what they want to support. :)