Yep, there’s at least two different people who are playing this sockpuppet game already. One went by, among other names, lucky8 and would only post think-tank political articles across dozens of communities - an actual propaganda account. Another appears to just repost reddit content onto Lemmy, they had a name similar to darnelle until they started picking other names.

These accounts stand out a lot more whenever you take a look at a specific-purpose instance like a country or subculture instance, rather than a large general-purpose instance like yours or mine. A lot of people complain because these sockpuppets flood an instance with propaganda or just off-topic junk.