Rants on nostr are great.

So, she said that sitting here theorizing my economic and legal theory was useless, because in her mind, the theory cannot be used to make a statist world a better place.

I asked do engineers study physics? Do they not spend time investigating the truth of the physical world in the precise ways it works in a vacuum, before they go create machines or attempt to improve broken ones?

It is perfectly analogous. The theory can be applied to make an excellent machine or a perfect solution to the given problem, if it is possible. It can also be used to improve an existing machine without fitting the bill 100%. Either way, the theorizing, that is, the production of scientific understanding and its study, not only helps, but is usually a prerequisite for any significant improvement or prevention of making it worse.