Ah, so part of the "back end" and "algorithms" - automatic comment rejection if you don't vote on the 3 random comments in a way that is conforming enough to the way other users vote - or if you vote too fast, as I assumed many would do - just clicking a random button too quickly means that you're unwilling to "participate" - you just want to "comment" which doesn't ensure a "civil" community of commenters :

Screen grab from a rejected comment :
i5guy
3 hours ago
Rejected
Personally, I already don’t have the time or energy to actually read the stuff they ask me to vote on. I’ll just randomly click on yes sorta or no to make the buttons go away.

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