So let me get this straight, you are saying that DT members (or anyone else) can't tag scammers unless they actually got scammed by them?
yes! that's how business work.
I didn't use escrow, that's my fault. Just like any business, there is escrow too.
I don't see why you think that it's proper to wait for a victim to send a user negative trust.
Do we wait for thieves to steal before we convict them of their crimes, despite knowing their intent?
How about ponzi schemes? If we wait until they collapse to warn people that it's a scam then there will be literally no consequence to someone starting a ponzi.