I know that the list admins have been criticized of
late for letting
through messages that people have questioned. However, this list is the
forum of last resort for people who have been banned from post to Wikipedia.
It rarely does any good, though. It would be better if they emailed
the admin in question, or ArbCom.
I'm one of those who see very little harm in
letting through a hostile
message. No one is forced to read the message.
There is no way to know if you want to read a message before you've
read it, so you are forcing people to either read the message or not
read the list at all. (You could read all the messages that don't
mention admin abuse in the subject line, I suppose, but that would
still result in you not reading perfectly good messages about admin
abuse.)