What exactly is the opposite of tagging scammers? Is it, being tagged by scammers?
Has anyone suggested that would be adequate criteria for DT selection?

The disagreement seemed to be about whether or not Satoshi would belong on DT1 if they were active; I guess the simple answer is that they would be treated the same way as anyone else under the new system. If I had to guess, it would be more their choice to be on DT1 or not (as we've seen with well-respected members already) because of the amount of inclusions and meeting the other criteria.