That is rediculous. Sounds like better filtering is needed.
If everyone filtered their connections, this would be a lot
better. You can't filter your peers (easily in a way that it can scale
well), but if you filter customer connections on a per-prefix basis,
(and/or by as-path), you can reduce this type of nastyness.
Customers should not be trusted, and peers should be looked upon
with a great deal of concern, because they can send you anything pretty
route-servers are a bit more scalable, but because most people don't
keep their RR objects in place, it makes it a bit tougher to use those
tools, not counting other things. Most folks end up creating their own.