WTF is this trust list, and who cares about it and why would it affect bitcoin talk forum login ?! Does it check it ?
In fact, Satoshi Nakamoto account, satoshi was not banned, but locked.
https://bpip.org/Profile?p=satoshiIt was locked for security reason, by theymos.
If Satoshi Nakamoto want to get that account back, Satoshi must sign a message with PGP Signature.
LoyceV explained why it is shown as locked.
The forum is so harsh that even satoshi has been banned.

This is mistake?
I've known for a long time that satoshi's account was locked (I think I must have read it in a post from theymos) to prevent it from being hacked. If satoshi wants to come back, all it takes is a signed message to theymos and he can regain access.
@
satoshi: all it takes is one new post, and I'll send you 50 Merit

I didn't know "locked" also means he's banned though, until
I added OmegaStarScream's list to
my list of banned users. Most of them have probably been banned for years already, I just didn't know about them until last week.
Last week, 1019 users on my
Trust list viewer were marked as banned.
This week, it's 2122 users.
Update:
From
Will "satoshi" ever login again?:
Do you think "satoshi" will ever just randomly log in one day and post something?
His account is locked, so no. If he wants to claim his account, he'll have to contact me with a PGP signature.