Yeah, lots of broscience nonsense like that stems from the "bob did it and he is ripped so you must need to do it" line of thinking. Sedentary people need 0.69 g of protein per kg of lean body mass. Strength athletes need 1.41 g/kg (which is only 0.64 g/lb, way below the crazy numbers broscience likes to repeat). People who lift weights casually 3 times a week are going to be somewhere in the middle obviously.

http://www.ncbi.nlm.nih.gov/pubmed/1474076?ordinalpos=3&...