SMT_UPVOTE_LOCKOUT_HF17 : Static – This value locks out upvotes from posts at a certain time prior to “CASH OUT”, to prevent downvote abuse immediately prior to “CASH OUT.”

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Is that true? I thought *_UPVOTE_LOCKOUT_HF17 was to prevent upvote abuse by only allowing downvotes for the last 12 hours before cash_out.