Just the fact that someone gets noticed and potentially talked to if they just upvote, and not say anything, seems like something that's never been done before, and is a bit shocking to see.
im on another site where people use evasion methods to use mutltiple accounts, said upvotes are monitored by reddit and removed/ban the user quickly in some case like if you have multiple accts before doing the same thing and not commenting or whatever before. i think they just increased thier filtering of upvotes, its so sensitive that new accts wether your a real user or someone using of/advertising, that if you upvote too many times anyways, not just violence, it can get you shadowbanned.