More research isn’t a bad thing, but this really isn’t news. If you’re a nerd who’s into lifting you’d already know that soy protein is a top tier source of all the important amino acids for muscle gain. And it’s cheaper than whey.
It’s also not very popular because the manosphere tells men that consuming it will feminize them. Yes, really. They took the “soy boy” thing very literally and ran with it off the deep end.
Also FYI: if you are getting enough calories, you are almost certainly also getting enough protein. The RDA for protein is quite low, 0.8g per kg bodyweight, or about 10% of your caloric intake. You can meet this by eating just grains. However, as mentioned in the linked source, the RDA is intended to prevent nutrient deficiencies, not provide an optimal level of intake.
To gain muscle you should be eating 1-1.4 grams of protein bet lb of bodyweight
The mix of metric and fantasy units is quite infuriating
On the face of it, yeah. But since we are talking about a ratio of nutrient to body weight, there’s no inherent benefit besides ideological purity to using the same units for both sides of the ratio.
In the states, nutritional info is universally listed in grams, and bodyweight is most commonly measured in pounds, so in that context g/lb is a perfectly logical way to describe recommended intake levels.
To an American, yes.