Yeah, and almost certainly not true.
> These usually have a bit of a nationalist bend since the implication is that the local chili heavy cuisine has been unchanged for millennia.
Why do we have the need to claim that our cultures have been unchanged for millenia? Almost none have, human culture is remarkably adaptive and changing, and every time two cultures meet they change each other, adopt each others food and music etc -- and why wouldn't they?
These days almost all humans/cultures are insisting that their "authentic" culture is unchanged for millenia though. I don't know if it's always been that way (see what I did there haha). I think it's actually a very right-wing sort of thing, harkening back to an imaginary "authentic" past when things were, uh, great.
It's effecting our very understanding of culture, we all think that "real" culture is unchanging forever -- which is not how humans work at all! Or that in some distant past, all culture existed entirely silo'd without interacting or influencing each other, merging with each other and splitting off from each other -- also not how hardly any actually existing human populations have existed through time!