One of the reasons for so many Yacht Club threads and questions is that the "ship-within-a-ship" concept is new to many people. Even people who are used to the concept (NCL Haven, for example) will ask questions to see how Yacht Club and Haven compare/contrast.
As the "ship-within-a-ship" concept continues to grow with the RCCL Suite Neighborhood, the Celebrity Retreat, and the Princess Sanctuary, there will be others who will compare/contrast the concept with the MSC Yacht Club.
In addition, the "experiences" of MSC lead to a lot of questions.
The vast majority of guests on the ship are not in the Yacht Club nor are they Aurea guests.
The vast majority of guests on the ship do not have Spa Access.
The vast majority of guests on the ship aren't eating in the specialty restaurants.
There are "regular folks" in every part of the ship with Bella, Fantastica, Aurea, or Yacht Club experience.