The BMW club pecking order is probably similar for most "prestige" brands of any persuasion such as Ducati clubs, Ferrari clubs, Porsche clubs etc. The most expensive vehicles create the (often misleading) impression that the owners have a few clues, and are therefore courted and fawned over. These inbreeds often end up on committees and do immeasurable harm . . .
Many of these clubs are little more than business networking groups these days, and operate in a similar manner to membership of a golf club, yacht club or similar. Best avoided . . . .