Confirmed in private conversation with dang [1], he restored it after I promised to behave, and now it stopped working again as I didn't properly toe the line.
Quite hypocritical to give power to the user with the tacit expectation that you share the same opinions and political bent as the moderation team.
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1: quote: "I'm afraid we took vouching privileges away from your account because you vouched for too many comments that were unsubstantive and/or flamebait and/or otherwise broke the site guidelines"
So, you know it pretty much like any right-wing-owned news site.
But if it's merely [flagged] (with associated penalties keeping it off the front pages) there is no option for vouching to remove the penalty.
This one is currently [flagged] with no option for vouching.