Elon Musk doesn't seem like the easiest person to work with, but I'm having a hard time thinking of a more accomplished human.
I mean, I guess some people here subscribe to the notion that space travel is imperative for human survival. In that case, you might argue that each step towards it is more valuable than anything else that does not immediately push towards human space travel. Human space travel will save humanity, your piddly vaccine only saves a couple of hundred million people. But that seems a bizarre argument to make (and maybe that's why one really makes it).
Edit: -3 in one hour? Wow. For what it's worth, I made this comment in good faith.
Are you really trying to gauge whether Musk is an accomplished person? Paypal, Tesla, and SpaceX are each the most successful companies to date in their respective markets.
Everyone on this thread would think a vaccine that saves hundreds of millions of people is a good thing. Be reasonable
The point I was trying to make was that gauging persons in this way is very strange to me. Accomplishment as a concept isn't something that can easily be compared. That is both because it is very abstract and fundamentally relative to another concept[1].
That's why the grandparent saying that Elon Musk is the most accomplished person (that he can come up with) struck me as odd; having a most implies having more/less. I tried to apply these general more/less as best as I could, but I explicitly said I felt bizarre writing it (I guess I should have rewritten it a sixth time).
[1] I.e. you are accomplished at something. Like efficiency: you can't be efficient, you can only be efficient in terms of a certain input and output. Both concepts are relative to other concepts. People often refer to efficiency and accomplishment without overtly stating the other concepts, but they are still there. Sometimes they are clearly defined by the context ("efficient car") sometimes less so ("efficient economy").