I just watched Is it real? On National Geographic on the Lost City Atlantis.

And some are saying that the hieroglyphics on the pyramids and the Sphinx talk about aliens.
The commentator also mentioned that the Mayans and Egyptians must have had aliens helping them to make their building structures.

Is this what archeologists in general believe? Why is it not accepted that it just could be that the ancient civilizations had skilled people to get such smooth work done from amongst the tools they must have had?

Thanks in advance.