to base your whole outlook on one documentary is somewhat short sighted - discredited or not
personally, i don't really care either way. as engineers we have ways of alternative power for transport and energy that are already in place.
and i'm not intending on being here for all that much longer in the grand scheme of things, so i'm not really bothered what might happen with the climate, planet etc. i could be hit by a bus tomorrow, so there's no point worrying about the what ifs.