Im not sure about the article but 5 years ago I was doing upwards to 2gr of gear and I wasnt geting much in terms of the earlier results I used to get with less gear. So I dont know what's at play here but doing more juice will not make more receptors as far as I experienced and even if it did I wasnt gaining anything from those particular receptors.
However, I started to see gains after I did GH and IGF for a numbers of years. My gear amount went down to less then a gram as my weight went up. THe new muscle cells GH and IGF created new receptors making gains easier and permanent.
Even if we were to think this through ....ok so you have more receptors but who cares if you muscle cells are the same, they can NOT blow any bigger with 1, 2, 3 or how ever many more receptors you have it doesnt really matter unless you built new muscle cells. Follow me?
The way I see it is like having a 10gallon tank of gas in your car with 3 nozzles to pour the gas in...you still can only put 10gallons of gas in it regardless how quick you can pour it in!