From what I can find, it’s based on the Chinese Dongfeng Nammi Box
Similar to how the Ford Explorer EV is based on Volkswagen’s MEB platform (same one as most of their EVs like the ID.3)
so calling it 100% indigenous is a bit of a stretch. However, while researching this, there was a lot of anti-AES nonsense and propaganda, so hard to say if the downplaying is more untrue than the claim of 100% indigenous. I can’t find any hard information on this vehicle at all. It’s either fluff pieces or racists saying that it’s not possible that Africans could do it on their own.
Regardless, progress for Burkina Faso is a very good thing to see