I would think it would justify additional regulations to allow for something like "upgrades" to existing certifications instead of the binary (full recertification|pretend plane is identical) standard we appear to have today that resulted in the 737 Max tragedy.
Is that less regulation? More regulation? I don't know, and I doubt it matters if it's "less" or "more" since the goal is fewer dead people, not passing an ideological Turing test.
You are suggesting stronger regulation of some aircraft ('upgrades', as you rightly say), without weakening regulation for any other aircraft. So it's certainly 'more regulation'.
> I doubt it matters if it's "less" or "more" since the goal is fewer dead people, not passing an ideological Turing test.
It's a political question, so there's at least some question of ideology. Full-bore libertarians would doubtless find some way to oppose your suggestion.
You said regulation caused perverse incentives that ultimately got people killed. It would be more fair to say that a loophole in the regulations, caused the perverse incentive.
Even if your assessment is valid, you’d likely be throwing away the baby with the bath water if you’d cut regulation to avoid it.