No it's I that don't understand your implicit point that we should let academics fiddle. Is it just because there's some grand narrative around science being objectively and absolutely for the betterment of mankind? The ideological devotion to science as some kind of monastic pursuit blinds you to the very real facts (on the ground) about how much funding is wasted on one off papers, one off projects, whole conferences devoted to areas that will never improve anyone's life or generate absolutely any return on investment.
>Also, I would challenge you to point to a NSF funded idea that is 100% clearly, objectively useless
It's very easy: pick any nsf grant going back as far as you'd like (such that there's enough lead time) and look at the number of citations on the papers generated from the grant. I don't even have to do this because everyone knows that probably 50% of all papers get absolutely zero citations (https://www.science.org/content/blog-post/not-so-many-uncite...).
>It's true that industry could have but they didn't, and that's the point
Again I have no clue what you're claiming here. You're trying to make some kind of case for academic science shouldering the burden of some fraction of fundamental (pie in the sky) research by citing self-driving cars which is positively laughable as an example of such research.