It looks like the last verified contact with them has been in 2018. Recently a youtuber went there and tried to get their attention, but couldn’t find them.
Is it possible they’re not even still around? Maybe a disease found its way onto their island and took them out. It could have even been from the last visitor in 2018.
Not totally correct, the 200 number does assume that you have a mix of genetics and the average numbers of genetic diseases. There are models that show that populations that have been isolated long enough to basically “outlive/outgrow” most genetic diseases in their population they need lower numbers (which has been the case for some indigenous communities in Australia, Papua and is likely the case for some in the Amazonas - and the Sentinelese).
We don’t know if that is the case,but it might be. We simply don’t know.