So creating cheap, reusable giant rockets is standing in the way of human progress? Being able to use neural links to restore sight to the blind is standing in the way?

There was another group of people famous for building innovative rockets, but are otherwise not associated with human progress.

https://en.wikipedia.org/wiki/V-1_flying_bomb

So it is about the big picture. (And about small pictures like that of Elon making a salut like the other group).

So yes, currently his rockets do not transport explosives. But that can change anytime and I expect it will very soon.

I'm pretty sure that GP commenter was referring to the other stuff.