I don't think its a double standard if the forum owner retains an "administration name".... as long as its only used to respond to administrative issues.

For example if someone starts a thread in the site issues/comments forum requesting a change, it wouldn't make sense for SA to respond. Or if Jon wants to change something on the forum and wants our input so he starts a poll, the thread should be started by a forum administrator username, not a vendor.

Other vendors don't perform administrative duties, so its a special case.