If you're reading thus, the general rule of thumb is 1.8g/kg of lean body mass. Works out as around 4 meals per day of 20-40g of protein each, depending on weight.
Wonderful website! I would like the creator to continue existing for as long as possible.
I try to hit 2g/kg when I'm actively training as an athlete, and it's not that easy, and the tradeoffs to diet probably aren't worth it for most people.
Public health recommendations have a notoriously poor record (take the food pyramid for example), so RDAs aren't exactly the way to build a healthy diet. [0]
For example, here's a paper uncovering a statistical error in the calculation of the RDA for Vitamin D (600IU), resulting in it being over 10x lower than it should be (~9000IU). [1]
[0] From Harvard Health website: "The RDA is the amount of a nutrient you need to meet your basic nutritional requirements. In a sense, it's the minimum amount you need to keep from getting sick — not the specific amount you are supposed to eat every day."
Most people should be doing some form of resistance training, so not sure how this can be "barely relevant for most people".