I think a better question is why is someone who has zero trade history (and thus no reputation to maintain) allowed to be on Default Trust?
Having this person on their trust list is a clear example of using shills with the trust system, however in this case the rating are going to show up by default to everyone.
Not exactly. cryptodevil has had an active presence on the forum for scam busting and apparently had trustable behavior, so someone on depth 1 added him to their trust list.
IMHO, I think that the trust rating was unfounded; the possibility that the OP was just a supporter of CloudMining.website is pretty plausible.