If you are non-DT you can set your list to full of scammers if you wish, nobody should care. if you are DT, you affect everyone and thus are responsible for keeping a proper list. If you don't, then you should be willing to accept the consequences. Your post didn't need breaking down as it is just not worth it.
I gather when you state DT, you mean only DT1. As a DT2 member, the only effect my list has is with the selection of valid DT1 candidates (Like everyone with more that 10 merits has on the forum) and if anyone cares to set their trust depth to 3 or 4.(Which is not recommended.)