Such high recommendations are for people that want to maximize muscle retention / growth not people that just want to be healthy. You can get by on much less.
The RDA is 0.37 g/pound. For a 180 pound guy, that means 67g of protein. That might sound low, but wait... At least according to this one page I found, 25% of American adults eat below RDA. It's not hard to imagine then that there are many people for whom 22g extra could make a decent difference.
> The Recommended Dietary Allowance (RDA) of protein is 0.8 g per kilogram of body weight (g/kg/bw), or 0.36 g per pound of body weight (g/lbs/bw).
> However, the authors of a 2019 review suggest that this number is often misinterpreted as the ideal number. It’s only the minimum amount of protein required to prevent nutrient deficiencies and muscle loss in most healthy individuals.
> A 2017 study found that participants who ate a high protein diet of 1.34 g/kg/bw (0.6 g/lbs/bw) for more than 75% of the 6-month duration experienced significantly more weight loss than the group who followed the RDA requirements.
> A 2016 review found that eating up to 2 g/kg/bw (0.9 g/lbs/bw) may help promote strength and prevent muscle degeneration.
