Gloss over the meat of the argument. Good call.
Something that isn’t guaranteed by man or natural law (eg physics and biology) isn’t guaranteed at all.
I will gloss over your sarcasm because I don't think it befits the discussion. I'll make an attempt to put things on friendlier terms after I respond to the above.
Regarding Natural Law, I would respectfully but unapologetically say that this is a confusion on your part. The first definition of Natural Law, and what people mean (for hundreds of years) when they talk about these things, is not the same as science i.e. "laws of nature". Because it's an understandable confusion of similar wording as well as some abcient history, there is a second definition below - but the clear context of this Rights discussion would be the first one (nothing is spin here; just type "natural law definition" into Google and this is what you get):
nat·u·ral law
/ˈnaCH(ə)rəl lô/
noun
1. a body of unchanging moral principles regarded as a basis for all human conduct.
"an adjudication based on natural law"
2. an observable law relating to natural phenomena.
"the natural laws of perspective"
In a nutshell, the important tenet is that you cannot have a fundamentally correct and just government derived from the authority of men (i.e. persons), no matter how wise, just, ethical or educated they are deemed to be. That is what distinguishes Natural Law from Law of Man. It doesn't mean you have to believe in my God, another God or any supernatural or alien deitie(s), though you may. It means that you cannot correctly derive the authority or rightness of the law from any person(s) no matter how highly placed or regarded in society.
The American government is established from the "consent of the governed". Specifically not the consent of the Governors (or President or King or Supreme Leader etc. etc.). It's not that nothing else is possible or imaginable; clearly most of world history and human behavior, as you essentially noted, is filled with practices quite contradictory to this. And that's exactly why it's important to comprehend the topic and the historical significance. Wonderful books we written with philosophy that underpinned this, before the United States came along - yet the title page would generally be dedicated to the grace of the current monarch.
The very fact that this Natural Law / Derivation of Authority topic seems to be a novel, unusual or unfamiliar argument to you, as a clearly intelligent, thoughtful and probably well-credentialed person (and that's an absolutely straight and sincere statement), is a phenomenon of the last few decades. You certainly may wish to disagree with the philosophy of our constituted government (on which I would respectfully differ with you if you did), or wish to point out the legion of failures to adhere to it (on which I would sadly concur). But what's striking is that we can't even establish the common ground of what we all should have been exposed to in school, so that we understand the terms and bases of agreement or disagreement.
I honestly don't want this to devolve into back-and-forth forum snark-fest. I entered this facet of the thread to make a clarifying statement about whether rights are granted vs. guaranteed. This is not a novel topic, and I stand by the relatively basic points I made - points that as I say were hardly unfamiliar until recent times.
Further, the fact that I'm writing all this does
not indicate that I put myself up as some great expert on the subject, nor that you'd have to throw yourself deeply into esoteric study to keep up. No more than I would put myself up as a world-class mathematician just because I made some familiar points about algebra that we both learned in school. It should be a similar "understood by all" thing, but unfortunately it isn't anymore.
Finally, I already acknowledged that this is off the Tesla topic. But I would beg the Indulgence of moderators and Tesla fans because it's at the core of big news about Elon, Tweets and free speech, even if not about FSD. (I don't mean that Elon thinks as I do about free speech - I have no idea, and I certainly can't expect that he would have had an American civics class in South Africa.)
But these concepts, that were bouncing around the world prior, were indeed first crystallized into practice, imperfectly but importantly, by the American experiment. Today, all sorts of national constitutions and UN declarations embody similar philosophy even if badly violated in practice. The fact that Elon has spurred us to talk about this at all is, to me, a bit of a victory.