Anyone can start a new FB Group at anytime on a whim, and name it, whether or not they took the time to search for other similar groups.
I can't help but think there's more going on here about the defense of the KFOCI "brand" but if the competing groups and members are diplomatically welcomed into the "officially sanctioned" KFOIC sanctioned KF Group then that issue is solved and the KFOCI club administers the entire lot of KF owners, whether or not they're paid KFOCI members.
I think this is a good forum with lots of valuable experience & information on board and, and even though it likely requires a monthly hosting fee as opposed to a free FB Group page, it should be retained for it's content.
The reality is that FB is an unbelievably successful and widespread platform that a huge number of tech savvy people use daily, why not tap into that.
Since I weighed in a year or so back with my two cents about improving the clubs internet presence, just the FB groups I'm aware of have each added hundreds of new members, while the issue of finding new members continues to be broached here from time to time.
Personally, I'm not a big FB fan but the car group sites are thriving just by being mainstream, rather than trying to come up with ideas on how to stop shrinking. It's just a suggestion, if it doesn't fit the club mission that's ok, it's just my two cents as a member, and my observations.