This is the only post I can find on the subject:
It’s the one you seem to be going from. They expressly don’t want you to use any addons. Communities are not addons, they are functions provided by Blizzard for communicating beyond the guild level.
If 40 people decide to queue at the same time and tell each other that their queues popped at the same time, they are using software provided by Blizzard.
Again, Blizzard created communities so people could communicate. You’re complaining about the communication.