That's like the bare minimum to avoid obvious nutritional deficiency. For optimal health and athletic performance most people can benefit from significantly more.

Nah. Insane is a really heavy word to use here. Everyone is different. And 60 is really low, insane even, for the average sized human regardless.

I'm assuming they mean "a quarter protein heavy dish like a meat, etc"

weightlifting folklore says you should eat at least 1g of protein per kg of body weight to gain muscle efficiently