I wouldn't see anything wrong in giving him a shot as long as he knows the significance of keeping a responsible trust list and doesn't have any other things against him that would rule him out as a DT1 candidate.
I do agree with you, and I'm certainly not in favor of excluding people simply because their trust list includes users I do not include or am unfamiliar with.
However, every single member on his trust list (including his new "curated" list posted by 1miau above*), has left him positive feedback. Also, with the exception of cryptodevil and Buchi-88, none of these users are either DT1 or trusted by a DT1. Therefore, he is the only person who is granting DT2 status to 17 users who have left him positive trust, therefore massively inflating his own trust score. That seems a bit too much like trust abuse to me, but I'm happy to hear counter arguments.
*This was taken from Loyce's database and so may be outdated at time of posting.