Is this for bodybuilding purposes or maintenance for average joe?
The numbers will vary greatly depending on what you’re trying to accomplish.
There may be one guy saying that 0.8 is more than enough, but if you look at the diets of any of the professionals around here, (“eg. the creation continues”) they all eat ~1.5 for general purposes. Cantazaro gave out a twice-a-day wo plan a while ago and then advised you to eat 2 grams/lb because it’s such an intense split (no anabolics either).
I think you have to take into consideration your training schedule, goals, and maybe even personal differences. Once you figure out all that, there’s still going to be dissagreement like there is in any other issue in this sport.