This is not a mafia, this is just a downvote. And they are part of proof of brain just as much as upvotes.

Who dictates what is "good" or "bad" content?

Proof of brain, the community and stakeholders. This is literally the point of this blockchain. And to vote for to say if content is good or bad, people upvote or downvote. I know this culture change is recent as free downvotes only came three weeks ago but people will have to get used to it.

I'm already hearing from Appics users who are getting random downvotes from you

Which users ? My downvotes are far from random. I either trail the downvotes of abuse fighting people or downvote myself. So if they were downvoted, there must have been a good reason why.

I'm telling you, this is a bad way of approaching this issue. If you want to downvote bot users, fine, but don't attack based on "taste".

once again, this is literally proof of brain, aka the base of the chain.