Because you blocked the entire instance these communities are on. I feel that is the most obvious behavior. Subscriptions don’t really factor in here as they aren’t “whitelists” for blocks.

That doesn’t answer the question. To say “most obvious” just rephrases your position. We have a system that disregards user input because it thinks it knows better what the user wants. That can only be an “obvious” behavior if in fact you expect the system to be incompetently designed.

Advertisement? Deception?

Calm down. Advertisement is a metaphor. If you don’t grasp it, just forget it. A capability is advertised to the user by giving them an option. Then failing to execute on the user’s instruction amounts to deception.

I admit that deception is typically a deliberate act. I did not mean to imply that. It’s safe to call it an accidental deception.