In reply to Justin Tadlock.

because I hope it helps push for better custom status support in core

Amen to that!

Post statuses are only really useful in conjunction with the post type they’re being used with.

After reading your comment, I think I mostly agree with you; however, in this case, I think there is an argument for a "this used to be published but it's not published anymore" status that really is as simple as this plugin provides. Like this post said:

To use drafts in this way would be to split its purpose into multiple uses, which are not clearly separated when sorting...The archived status keeps everything nicely sorted for future use.

I've had many a client request exactly this feature that applies equally to all their post types. I'm a big advocate of pretty much never deleting content from the admin and I think providing a custom status identical to "Draft" but with a more accurate label for this purpose is worthwhile.

For most other statuses—and for more complicated "archive" statuses even—I'm totally with you. I just think there's a place for a plugin as simple as this. That's my $0.02 at least. :)