That's utter BS man! What's the difference if you bulk up with 1000 kcal extra per day or with 300kcal? Does the body notice a significant difference because you eat your head off? Nah, it doesn't! If you don't want to be fat and muscular forget everything he said. Oh sure it's nice to eat all the time, but too much is too much. I eat close to 3000 kcal a day, and I'm 175-180 lbs right now. My fat % hasn't been measured for awhile now... but it's definatley under 10%. Eat smart and train hard. That is the most essential part.
Oh yeah, I do know that many bodybuilders bulk up off-season. But are you ready to diet for 20 weeks in order to get down to a lean body? And then gain all the weight again? Unless you are a professional bodybuilder forget bulking up. Eat enough, but not too much! Eat smart, high protein the days you work out.
You don't have to make it into nuclear physics. It's just 1+1=2. Eat smart (no pizzas and 5-6 meals/day) + train hard = Good and healthy body.