True the big visible stuff like moon launches have given wway to Muslim feel good crap, but there have been so many less high profile advances. Composites/metals advances, the tech that would be used in space journeys/survival, medicine...all those things that don’t scream “warp drive!”, but are none the less required.
The computing thing... We went to the moon with a combined fraction of the processing power contained in a modern iphone. If we ever regain the will to exploit it, to regain our exceptionalism, we will amaze ourselves with what and how fast we accomplish it.
But that is of course, a big ‘if’.