Actually, rBGH has never been proven to increase net production. It has been proven to increase mastitis and reduce the overall productive lifespan of cows.
The cost of milk is not the result of Luddites, but over-regulation by agencies without oversight and government market intervention.
Conservatives are generally opposed to both of the latter.
You are both right and wrong in the second. It is government over regulations which are pushed by the Luddites. Most regulations come from some bunch of city dwelling dumbos pushing some badly done research.
"Can you prove that your feeding the cow clover will never cause harm to anyone or anything ever? No?"
And the next thing you know there is a regulation against feeding cows clover.