20 grams a time?
Actually, there is truth to it, it's just not well explained most of the time. Your body can only use 20g at a time to rebuild or build muscle. The rest is either used as fuel or stored as fat. There's nothing wrong with using protein as fuel provided it's dietary protein and not the protein from your muscles. That's effectively the premise of a low-carb diet.
http://www.ironmanmagazine.com/site/anabolic-protein-limits/
http://www.ironmanmagazine.com/site/anabolic-protein-limits/
I found a protein- shot thing that has like 52 G of protein. I liked it BC I was going to a music festival and thought it would be easy to pack and carry around. So I spoke to my NUT and she said you can absolutely absorb that much- but they want us to eat correctly all day long to make sure we are correcting our eating habits for the long run.