I have never taken the idea of large-scale colonization of Mars very seriously, at least not for the foreseeable future. Nothing about these two videos changes my mind.
When thinking about colonization, we often focus on the fact that Mars is pretty much hellbent on killing organics. But what about Lord of the Flies-like tribes of humans turning on each other in a desperate fight for resources or via the phantasms in their heads as settlers go loco from the deprivation and isolation?
I'm with Bill Nye. Exploration? Yes! Settlement? Hell no.