Probably because that's been debunked. The claim came from a preprint paper from a team in India and was immediately debunked by others who looked into it. In short, there was only one insert even remotely similar to HIV and it was so short (6 AA) that its existence is easily within the boundaries of random chance.
"the paper IGNORES the exact correspondence of the receptor to Pangolin. It is the ONLY region that matches pangolin and not bat."
Here you're talking about the S protein. And it doesn't contain Pangolin DNA; it contains sequences similar to pangolin-CoV which is just a genetically similar coronavirus that infects pangolins. Yes, the S protein is similar between SARS-CoV-2 and pangolin-CoV. Yes, antibodies appear to be cross-reactive because of that. But all that suggests is that the SARS-CoV-2 virus is closely related to other coronaviruses circulating within animals. Bats aren't the only other creatures on Earth to harbor viruses that have jumped species. The 1918 Spanish flu we've been talking about so much since all this began likely was a cross between human Influenza and avian flu. Since they couldn't directly infect the other host at the time, the most likely candidate for an intermediate (an animal where both could infect and combine) would be pigs.
So a pig gets avian flu and human flu, and out pops a virus that's similar to both but have the right characters to enable infection of humans with a payload more similar to the avian variety. That's how species-jumping works; you get bits from different species.
Like most conspiracy theories, this is essentially a house of cards constructed from bits of misunderstood information.
It has not been debunked.
in fact the primary structure is near exactly
Pangolin RNA over the S protein
.... but not in any other part of the genome,
and there are several structural and non
structural proteins.