I kind of fail to see how would this be useful for anyone but him. The fact that he has a team working with him to make him the most healthy human possible is cool and all, but there is absolutely 0 guarantee that what works for him would work for any one else. Our bodies can be surprisingly different, this is why it can be surprisingly hard to draw any conclusion from research involving a few hundreds tests subject. As an example, a lot of diets are still contentious and the subject of many debate.

So with one data point ... For all we know, his Blueprint might be over-optimize for his own body and might be extremely detrimental to most people.

Although, on a side note, seeing how my grand parent fared towards the end of their life, I did realize that I do not fear death or aging, I fear the slow withering where you get more and more diminished. So I get where this idea is coming from