There have been differing schools of thought on how best to feed the Buckeye. Some think you have to feed a high protein, game type feed, to achieve good results, others use just good quality feed along with pasture raising and achieve good results.
I find that feeding a good quality feed between 17-19% protein, regardless of on pasture or in their enclosed breeding pens. My Buckeyes achieve SOP weights with no problems. This goes along with having good genetics in a line so they do achieve their target weights. You shouldn't have to pump extra protein into birds to get them there. It is a waste of money and could potentially cause harm to the birds. By forcing a very high protein, it causes them to work their livers and kidneys harder, which is counterproductive to getting a productive bird for he long run. Heck, I don't even feed my meat birds anything over 20% protein.
Anyway, that is where that comment stems from.