Ah ok, so like the follow lists, but for mute lists. Would be cool if there was a way to merge the various type of mute lists into one that's managed. Fediblock is similar, where you can make your mastodon/lemmy instance defederate with another. In most cases, it's just blocking right-wing instances out of thinking everything is a nazi. So, the only concern with shared mute lists might be cases where someone is added indiscriminately because someone "feels" that person is some kind of bad, when objectively they might not be.