Yes - and consider how many people have the resources needed to run Stuxnet versus ordinary ransomware. That seems like a pretty clear win if you can shrink the pool of likely attackers down to “top-tier nation-state”.

Let's not let perfect be enemy of good, especially since we can't never be perfect.

Stuxnet was built by a very well funded organization and was not targeting monetary gains. Getting ransomware spreading via USB drive is insanely expensive and complicated. You won't make money on it, whatever they are extorting will not cover development expenses

"and was not targeting monetary gains"

But in the end was it really though?