I am surprised because I don't really understand how to use it. I have not really actively given trust feedback to anyone, so far.
I was surprised too. How you get on the Default trust 2 trust list is because someone on the default trust 1 lists manually added you on their trust list. I went ahead into my trust setting, picked heirarchy view and found out that a user named tmfp placed you on their list. You can be removed from DT2 if one more person in DT1 decides to exclude you than put you on.(Or the people who orginally included you remove you from the their trust list) It appears that your name came up in the discussion about the new changes is a list here.
https://bitcointalk.org/index.php?topic=5095156.645 Some people are questioning why certain members are now in dt2 with no trust feedback history. Some pruning is probably going to take place in the next few days. It's up in the air if any of us on the dt2 list will be on it for very long.
Hahahahahaha
It could be - easy come, easy go.... ?
My days on DT2 could be numbered?

I suppose at some point, if I familiarize myself with how to give ratings within the DT system, and start to send out trust feedback, then maybe my placement as DT2 would become less controversial? Perhaps?
In providing trust feedback, I just would not know for sure where to begin. Of course, if I had some kind of commercial trade or interaction with some forum members, then I could start there, but I do not.
Otherwise, I only somewhat know members from interaction through threads (mostly the WO thread), and it seems not too easy to provide trust feedback on those kinds of thread participation grounds.
Of course, for the basis of my recent memory about interactions with members, if I have sent a lot of smerit to certain members, then perhaps those members would rise to a kind of trust level within my thinking and interactions.
I will have to ponder the matter a bit further before taking any actions.