Because they have no control over the content on that site. The owner could easily throw up some raunchy content, which would make for a weird experience when it comes to discussions like this one.
Or, quite legitimately (I slay me), between RTM and pushing out the update, someone could have registered the domain and used it for content, then see their site hammered by irresponsible software publishers.
Why not send it there is the question on my mind.