The Nat Geo YouTube channel has the Elon video:
And plenty of others.
I have on e episode left in the first season (I just found the on-demand feature of DirectvNOW). My main problem in suspending disbelief is the constant back and forth between real people being interviewed in 2016, and the Mars crew being interviewed in 2033+. The contrast is just too much at times, and I don't believe the actors.
But I am still enjoying the show. It is less science-based than I expected, but still cool. Feels like each episode has its own catastrophic event, which I did not expect of Nat Geo. Maybe I don't know what Nat Geo does though. Maybe I'll check out Curiosity Stream!
In the end, this show makes me rethink my willingness to go to Mars. That may be reality hitting home via a nice fictional show...