[...]Quickseller is [...] only doing it to that extent because of his personal grudge.
Not against the forum rules. Quickseller is doing exactly what you're all doing, scraping out some change from this forum.
He's just better at it
Its not, but he is in the default trust list. It won't be justified if someone like badbear or theymos goes about giving negative trust just because they want to. Being in the default trust list, has to make him take some responsibility.
To be clear, he's in "default trust" because badbear currently trusts him. Badbear is away at the moment so we can't expect him to answer this until he returns and has a chance to see what's been happening. The way the trust system works is that because QS is intransigent and doesn't answer for his actions, the responsibility goes upstream to badbear. If, in an outlandishly surprising turn of events, badbear is okay with this, it would eventually go up to Theymos, who trusts badbear. If, in a nonsensical turn of events, Theymos didn't care then the only recourse would be to live with the abuse or go off to another forum. In the end, this forum is a privately run benevolent dictatorship, the buck eventually stops with Theymos. But there are a couple of levels between Theymos and Quickseller.