You're confusing trust as social term and trust as forum indicator. I use the word "trust" as social term.
Forum indicators don't make any sense to me. What if some legendary user knows you for a long time and can personally vouch for you? What if someone gave you a point for a confirmed transaction? They both can give you +1 trust, but, of course, the amount of actual, social trust (the only trust that matters), they put into you is different. Forum indicators can't reflect it.
You're the one who confuse it.
If the legendary user give positive feedback just because a long term relationship or helping you to understand something, without any financial deal. They're technically using forum feedback inappropriate.
If I were someone that want to judge someone reputation, I will skip to read such kind of feedback and only pay attention to feedback about financial.
So you're telling me that trust built in long-lasting relationships matters less than the trust earned by trading with other users? That's great! I guess I'll go farm the so-called "trust" by doing small transactions with other users until I collect just enough to do some nasty scam, only to remind y'all that Goodhart's law exists.
The way it works on this forum could be far better if we had some kind of "invite" system that wouldn't prohibit newbies from posting but would require oldfags of the forum to vouch for them to ensure that the newbies would act in good faith. That would be far less time-consuming for newbies and far more similar to how trust in the real world works.