It always seemed to me that in order to have friends you had to grow up with that set of people. My set all got DF'ed or left and I was the only one left. I moved to other congregations with my wife later and we never could make friends. We always got left out of just about anything social, as those people all had their groups of friends and kept to themselves.
After a decade and a half without any real friends we DA'd and now we have friends in the evil world that actually invite us places and care about us. Last weekend was our 16th anniversary. A client of ours in our cleaning business (and we're friends as well) just happened to invite us to go to an away basketball game for our local team. The had two extra tickets and asked if we wanted to go. Sure! Oh, and they would drive, so we could ride with them. Okay! Oh, and they already had an AirBnb with a separate cottage out back and we could just have that room to ourselves, for free of course. WOW! The only thing we had to pay for was our food, and once we got there the husband paid for all of our meals!!! I couldn't even get an invitation to dinner with other people as a JW and here we get a free three day weekend trip for my wife and I. Tell me again how Witnesses are such great friends.
JW's are just friends of convenience. You're in the same place so you might as well make the best of the time you spend together. You have a similar life in the religion. That's it. They do nothing to foster a sense of community or togetherness. Instead it is backbiting like you mentioned in the OP. Just a bunch of judgmental people trying to one up each other.