It seems to me this move is to compensate for the well understood issues in their routing layer.

You can call these issues "bold decisions." In my opinion, it reads more like, "We don't know how to fix the problem. If you really want to pay for it, we will let you skip our routing layer and solve the problem yourself."

It is a bit disappointing. However, I've never had to write a routing layer to handle 60,000 requests a second, so I can't really fault them.