Unfortunately, the way the 'market figures it out' involves thousands of people dying in order to get the point across to 'the market'.
That doesn't mean that the codes shouldn't be updated / refactored once in a while, but that's a pretty difficult thing to undertake, and there may not be political will...
Rip all of it out.
The scary thing is that the basement lights are still on the old wiring - roughly 1920's vintage. Fortunately, no gaslights left, although I do have one fitting in the upstairs sitting room!