Interesting but..
The skull was found in the 1930s but how old is it? He didn't say. It could be a deformed child from birth that died young. It could have been killed at an early age because of superstition. Also, the video shows the skull but it looks like a patchwork of skulls (?) put together. Now if he would have mentioned that surgery way ahead of time was done on the skull I might have believed him.
Human alien hybrid? There has been stories from abducted people that they have been experimented on sexually. It is possible but I don't think this skull is it.