Default trust is flawed, but otoh, consider if you weigh everyone's vote equally, that most scams here will beat you in numbers due to all the paid-for-via-signature campaign and referral shills. As a result every obvious ponzi with a lucrative profit sharing deal (ie referrals) will get high trust scores, and any wannabee scambuster like yours truly will be labeled a scammer.
If someone is an idiot, he'll be scammed. On or off the internet. If u want to police that, then this is your only option...
Back to the 'centralized communist' system everyone hated?
On the other hand, when someone gets the power to decide what is a scam and what is not, that is inadvertently gonna be abused.
If you keep trust, but not DefaultTrust, then u r only trusting people by your choice. Forum is not spoon feeding you, which is far far better.