That is not accurate. Immigration right now is causing a variety of problems, including for those migrating. I recommend reading this for an explanation of the current issues and some independent ideas on how to solve them.
I was not using iodized salt at all. I think since "elevated" cooking has become so popular, I can't be the only one who was eschewing it (Salt, Fat, Acid, Heat straight up recommends avoiding it). I also don't eat much seafood. When I was diagnosed hypothyroid 25 years ago, I was told I had a goiter. And not told much else.
I'm having thyroid problems, and in trying to research iodine, I have found that fluoride can have a negative impact on thyroid function. This link is the best I can do on the subject, given that I'm not sure how to find much trustworthy information. It says that as long as iodine intake is sufficient, the fluoride shouldn't be a problem. But I'm finding conflicting info on what constitutes sufficient iodine intake.
I just want to say I get where you're coming from. It sounds similar to the way people say "fairy folk" which I assume is why you mention mythical creatures. I guess a lot of people in this thread are less familiar with that usage.
Consequences and revenge are not the same thing. If he doesn't receive the direct consequences of his actions, he will not learn that he shouldn't do that. Clearly he is incapable of learning via polite means. You are not the only person he's doing this to, and it is not acceptable.
Only 77? Dude's young enough to serve two terms as president.