I am definitely not anti-vax. Having been on the receiving end of this BS, if there was a way I could sue my neighbor for defamation over their false complaint

I am definitely not anti-vax. Having been on the receiving end of this BS, if there was a way I could sue my neighbor for defamation over their false complaint to win something back, I would. But since restitution is not part of the law, this is a wonderful tool to bully your neighbors with.