The comments on video threads like these are usually interesting and all over the place.

Commenter Tigron had this to say in general about all planets:

Though I am a bit skeptical if the martian soil is even able to sustain life, I do believe that there is life on other planets for one simple reason. Our planet, even our solar system, is nothing more than a microscopic speck in our galaxy. To say that Earth is the only planet in the entire universe capable of sustaining life seems pretty far fetched to me. Point being space is a really big place and we don’t know what’s out there.

A lot of people have that opinion.  If we could get some recent soil samples from Mars collected and sent back to Earth that would explain a lot.  however, that would take some incredible engineering and a fair amount of time.