I don’t think so, people are too quick to explain everything with aliens, that the human being is much older than what was believed, it is much more probable and that there were already advanced civilizations before that have disappeared due to a cataclysm. The fact that they found skeletons of primitive hominids from 2 million years ago does not mean that they were all like that, before that there were many different human races and they may have existed in very different states of evolution.