The point I was making here is that having a single PKI root does not in fact do anything to achieve the end that they describe. The only way of achieving that would be to do violence to the X.509 architecture and misapplying it. Instead of making statements of opinion that they do not have the expertise to rule on, the IAB should have set out requirements for the RPKI system. On the issue of routing tables, it is a very difficult problem to solve, but not necessarily an essential problem to solve well.