As a former soldier and as someone who married into a family from the now russian occupied parts of Ukraine i feel that this is a great mindset, but also somewhat of a luxury believe. I agree that ideally we'd stand up to aggression and weapon production and that all other citizens around the world would do the same, and we'd live in peaceful equilibrium.
But they don't- and so our best bet is to be so strong that no one wants to attack us. For that, we can't leave the cutting edge of military technology to others.
This mindset used to be anathema to the tech community, but then briefly changed after the Russian invasion of Ukraine as people briefly understood that there are in fact aggressive actors in the world and war might come to us. But it seems we went back on that.