Well... it kind of depends on your goals don't you think? The average person needs .5-.8 grams of protein per pound of body weight (that's lean body mass also. If you're 180 pounds of lean mass but 240 pounds of human body then you wouldn't want to consume 240+ grams of protein per day, fat doesn't benefit from protein.)
If you're a world class bodybuilder and weigh 250 pounds at 7% body fat then sure, you need 1.5 per lb. That's still quite a bit and it's not only a waste of money and a loss of protein, it can cause problems for people who are predisposed to kidney issues. People who are predisposed to kidney issues, like kidney stones, preferably consume in the .5-.8 range.
You didn't specify who needs to consume 1-1.5 grams of protein, you didn't specify to reach what goal, you're just recommending that EVERYBODY eats that much protein? Even if your daily fitness regime is tantric sex yoga in front of the zen garden? Honestly submissions need a little more meat than "do this". Specially in a fitness sub forum where people exchange fitness advice and tips. This tip is equivalent to me saying "IF YOU DRIVE A CAR, GET REALLY HARD TIRES WITH NO THREADS"