Nonhuman biologics on Mars or Europa? Discovery of the century (assuming they weren't accidentally ferried up by a rover). But Earth? You have to go to a great deal of trouble to create a space without nonhuman biologics.
I'll give the video a watch. I will say though I didn't mean that I believed him completely, I just feel inclined to a degree. Some of his stuff is more than a little kooky.
Are you aware that his he has said that they don’t have the evidence to ascertain origin and has speculated that they may not be from another planet but from another dimension?
No reason to think there aren't other dimensions, and if there are any there might as well be an infinite number, and surely in an infinite number of dimensions someone in at least one of them discovered how to travel between them.