DR/BDR Election

here is a direct quote from encor ocg

Routers then receive and examine OSPF hellos from neighboring routers. If a router identifies itself as being a more favorable router than the OSPF hellos it receives, it continues to send out hellos with its RID and priority listed. If the hello received is more favorable, the router updates its OSPF hello packet to use the more preferable RID in the DR field. OSPF deems a router more preferable if the priority for the interface is the highest for that segment. If the OSPF priority is the same, the higher RID is more favorable.

this flat out wrong the router complies with existing DR on set segment in order to keep the stability of it , i know the answer but i tested it in order to keep my sanity and yeh still the quote wrong . am i missing something , or im misunderstanding the point in the book ?