The whole idea that if you tag someone for something then you have to tag everyone who's done the same thing is one big fallacy.
If you change the timing of both actions to be on the same day, it is not a fallacy.
It still is. It would be ridiculous to expect a DT member to tag every person who's done that "thing", same day, or the day before, or whenever. If you get a speeding ticket it doesn't mean that the same officer/trooper/deputy needs to ticket all other speeding drivers in the world.
Why is that a big fallacy? You would be abusing your power if you only tagged people that you wanted to. If you agree that account sellers should be tagged then all of them should be tagged otherwise what's the point of trust ratings. If anyone can do whatever they want then we might as well not have a trust rating system.
Besides being physically impossible, this is just plain ridiculous. We have 100+ people in DT for a reason. If some
turkey fucker is reluctant to tag someone then someone else can step up. If no one does then maybe the supposed offender doesn't need to be tagged.
Yes, I'm tagging only people that I "want to", i.e. have the time to review their alleged offence and to make up my mind. Trying to make me tag someone I don't "want to" could amount to extortion, something the OP claims to know a lot about.