OSPF RID (DR and BDR)

[Fuzz]

This is right. The RID is simply a way OSPF can reference a particular router (technically a neighbour) regardless of the IP addresses used to connect to that router. It has no bearing on choosing which router should be the DR and which should be the BDR once you have set priority levels. If all priority levels are equal, the router with the highest RID becomes DR.

As you set the router-id in steps 2 & 3, setting a loopback interface in steps 4 & 5 did nothing, as the RID has already been set manually. Therefore, it cannot be overridden by any interface IP address.