Sooooo... he is saying because breeders use jars and not tons of gallons per betta baby that people can keep bettas in nothing more than a bloody 2-shot glass? o_O I have Shiloh aaaaaall by himself in a 20 gallon. And he has yet to bite his tail anymore. Sure, if it were bare-bottom with no fake/live plants or hidey holes, and nothing to look at or swim around he'd be stressed (common sense).
However I personally know some people who keep healthy bettas in 1 gallon + .... Tank size will always be a conflict (I know yahooanswers has dah betta po-po comin' after some of the people)... But also, the comment about "we pamper them"about dogs that are bred... lies. Puppy mills feed them, sure, then force breed, and get puppies. tah dah ><