If you are going to tag somebody as a troll you should at explain how them being a troll makes them untrustworthy to trade with.
I've got no beef with nullius or anyone involved here, but the trust system shouldn't be used to point out that someone is a troll (which is very subjective anyway). Nullius's neg on OgNasty in which he calls him a scammer is fine, and he should have just stopped there.
Check my feedback history; I have issued a number of troll tags, going back to February of 2018, plus other tags that you may find disagreeable. If you do not want to see my tags, that is what exclusions are for.
I'd never looked at your trust page before, just did, and the forum's stance on how the trust system should be used has changed a lot since 2018. If you don't believe me, just ask Theymos.