I do not really know, but I'd give the simple answer that time was never put down on creating them.
I want to have those commands back as well, and things like /gohome /friend etc. I think I mentioned this in one of my threads and a few others a while back.
I find it very unconvenient to click and aim a mouse cursor a few times instead of just writing /gohome, not because it has killed anyone though rofl.
But in general, I agree with this thread aye.