I feel like you're intentionally misconstruing my point and being a little obstinate here. I'm not saying he's a person of high moral character, I'm saying that even the most psychopathic people you can imagine also sometimes tell the truth. Even a pathological liar doesn't lie about everything.
As much as this guy does not seem great, he could also be telling the truth. We don't have enough information to really understand what went on so that's my current stance: I don't know.
I will say that the fact PDTS seems to find his claims credible is enough to give me pause.
Putting your faith in fallible humans is your mistake then. This is why I thought that EWB was damaging his own credibility by vouching for Gibs. Especially after it turned out to be an honest mistake on his part for the vouch, which was later retracted.
Why would the community tolerate "community member vendor impersonation" with malicious intent anymore than we would tolerate "vendor shilling" with profit intent?
I don't disagree that liars can occasionally tell the truth. But the burden of proof is so much higher for someone of low moral integrity.
And I don't find fault in saying "I don't know". But I do find fault in saying "I trust [human X]" and that is enough.