I received negative because I offered an escrow service which hilariousandco thought I may run away (note the keyword may run away) with the money. Does that mean I committed a crime to get punished mentally?
From what I can tell, the amount you wanted to escrow is worth many average annual incomes in your country. As they say: "opportunity makes the thief", and even though I don't think you had bad intentions, that large amount of money would have been very tempting for a very long time.
On top of that: if you're an escrow, you're responsible for that amount. What if you somehow lose it? I highly doubt you'll ever be able to repay it.
To answer your question: I don't think you're a scammer. But I wouldn't call you trustworthy either. In my book, being trustworthy means staying far under any reasonable amount you can be trusted with. The fact that you offered to escrow means you were asking to be trusted with at least 500 times more than what's justified by your history on this forum. To stay safe, you should not have offered to escrow more than 10% of what your trust at that moment justified (so that puts you at 0.004 Bitcoin, instead of 20 Bitcoin).
(the numbers above are more or less arbitrary to illustrate the point I'm trying to make)