So I did a quick number crunch on this: To get to about 75kg of protein per day, let's say you only eat lean turkey and drink protein shakes, you'd need 200kg of turkey and 200L of protein shake.
You could probably make this intake more efficient, but however it goes in, I don't think my body would like me eating 370,000 calories per day.
I wonder what he actually meant. 1g/kg maybe? That would be 125% of the RDA, which I don't know if it's a good idea but it's certainly more reasonable than…that.
A common, reasonably evidence based, protein target for bodybuilding is 1-2 g/kg, with the cursed unit of 1g/lb being about the upper limit of what's useful. That's probably what this post is referencing.