On the side of the post, the community it supposedly wants to post into is the first tag of the list of tags in the json_metadata and Hivemind is doing the filtering as soon as the frontend requests the data.
So let's say we do a monthly NFT sale as an access token event to interact with anything in that community. That would not work, because people can still move to the author's blog and interact with them directly. That would not be true if the community would repost from the initial author while mirroring the same "mute" list as an account - at least for all commonly used frontends so far.
Am I getting that right?
If a post belongs to a community, comments will be muted according to the communities' rules regardless if you comment on it from their blog or from the community.
This is already true today btw: https://hive.blog/hive-140075/@hive-140075/test-s2fe8p
In this community I set @howo-test2 to the muted role, and then commented on the post from the account's blog, and the post ended up muted. If you want to test by yourself I set you as muted on that community :)