Wow HaWho, just nuts. I can't share anything about my situation for now, but I can say that I can relate with what you have dealt with. The lengths these folks go to in order to justify their choices, actions and behaviors and to vilify the LBS in the process is just extraordinary.
I'm sorry for all the difficulty you have experienced, but it sounds as though you have handled it with your usual aplomb. I hope things are continuing to go well with the kids, your fellow, and that Covid is a one-time through kind of thing.