If you want to be in DT, just start accusing people of alt accounts, start connecting people's addresses, start bursting cheating bounty hunters and you would be surprised how fast you will be on DT.
@OP isn't asking to become a DT member, when a DT1 member leave positive feedback in your account, it doesn't mean you will become DT2, except the user include your account in his trust list.
You're not wrong, but it sounds like you're have a sole purpose to become DT member by busting scam. You have a power to paint someone and your feedback is visible to everyone, but when you abused your feedback, you will get kicked from DT network ASAP.
And besides, feedback are of three types, there is the -
Positive
Neutral
Negative
Next time when making a post like this, be specific on the type of feedback you are referring to ..
Gain trust, how is possible you can think neutral and negative feedback is consider as gain in this forum.