Science in general does seek knowledge and rewards those who discover it. However many corporations, and institutions hold the financial reigns of science and scientist. This can be and sometimes is to the detriment of progress in a given direction. Much of science is driven by the military or powerful corporations with those agendas satisfied first and foremost then the public receives benefits in a trickle down manner. Profits almost always supersede benefits.
Don't get me wrong, I love science, it is just that to think it can't also be tampered with by those with power is being naive. Ultimately truth wins out but sometimes it can take decades or more. The above documentary is some proof of that IMHO. I prefer to examine the message on not the messenger. To condemn the information on the basis of an ad hominem attack of the writers/directors could allow one to miss some very interesting facts.