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Yes, the little ones are a nuisance... but in the end hold little power. People are going to troll... and it is best to just ignore it!

Anyway, the system is such that the status quo does have issues... but they are relatively contained due to the existence of "good" accounts that would step in if it got out of hand... however, like any governance system... hopes and wishes are not a great way to build a scalable system.