I left Ninjahitoko negative trust a while back and it may have been before or after he left me negative trust. Alt accounts generally don't work that way. So no, you're quite mistaken.
Yet another way you are trying to fly under the radar. By giving Ninjahitoko, a known scammer, negative trust, you are making your higher ranked account look more credible. Therefore, you can do scams of higher value on this account.