I believe it comes with the 'character' of the car we share fondness of. It attracts a certain type of person, and doesn't interest other types of people.
I can say that I have found a similar atmosphere on the international Lancia forum. Fewer surviving cars so less activity there, but very similar in terms of tone, interactions and helpfulness. Whether members are located in Germany, Italy, The Netherlands, Canada, Australia, the United States or other countries.