This ETS guy said time travel and portals do not exist. How does he know for sure? Does he have the clearance to know this?

He also mentioned that GOD created humans when the question was asking if humans are a genetic experiement of more advanced beings. Not sure by saying God created us is the most direct way of answering this question.

I believe he has good information on a certain things but when it comes to more esoteric topics his answer does not appear to be convincing or falls short of my expectation. Could just be my own belief system though.

What do you guys think?