Does that align with this emerging new proposal "we need more", and how does it adjust to age related needs which are higher?

I know how to apply a rule of thumb from prior statements I see, which are close to yours (ive seen 1.9) , the point of this article is "we need more" but the summary didn't say what "more" was.

So where does your 2.2 come from and how does it adjust with age?