What a weird thing to say. I wrote my first OSPF implementation in 1999. The point is that we noticed the solution we'd settled on owes more to protocols like OSPF than to distributed consensus databases, which are the mainstream solution to this problem. It's not "OMG we just discovered this neat protocol called OSPF". We don't actually run OSPF. We don't even do a graph->tree reduction. We're routing HTTP requests, not packets.