I saw that blogger's theory on reddit. He is way overthinking the movie, just like people did with Lost.

Big ideas, muddled script. What annoys me is that in interviews Damon Lindelof talks about preferring ambiguity vs spoonfeeding answers, but that only works if the script is done in such a way that multiple interpretations can be justified.

Look at Inception. You can conclude the ending is a dream, the ending is real, parts of the movie are real or not, etc. The script is well-formed such that these various theories can hold up.

This doesn't work with Lindelof because the guy likes to hint at big ideas but he has zero idea of how to tackle them. He uses the facade of "ambiguity" to rationalize his lack of clear resolution.

Anybody looking for deeper meaning in Prometheus is going to drive themselves crazy. It's a solid sci-fi thriller, but it's not the reinvention of the genre some people hoped it to be.

Honestly, the theories, debating, arguments, etc. that I'm seeing all over the web are identical to what happened during Lost. LOL, people need to stop looking for answers to life in some guy's movie script or tv scripts.