As you say, these kinds of questions are not ‘settled’ so it’s somewhat up to personal opinion. I think the best policy is to enforce rules only when there are obvious benefits. In the same way that theories should be simple, regulations should be too: “Make everything as simple as possible, but not simpler”
I’m not a hard line libertarian, I think regulations are good in many cases. But not in the case of high risk adventuring. If you want to climb Everest, visit the titanic or the stratosphere, then that’s up to you: the state need not hold your hand, the risks are obvious to anyone with eyes.
The fact that libertarians have a difficult time just goes to show how close minded and dogmatic universities are. If all flavours of opinions were respected enough for discussion then I think you would end up with less extremists online and in general.
I think the demarcation problem applies just as well to politics as to science. What is good policy? Impossible to know absolutely, so we must rely on heuristics, judgement and intuition. Claims to truly objective knowledge just don’t hold up. Regulators often fail, and in many cases no regulation is preferable. I can’t prove that, but critics can’t prove otherwise, so we discuss and learn and change our opinions as we go.
The Grenfell tower is good example of failure of regulation. And I think the fundamental problem _is_ over regulation. When regulations become bloated beyond the capacity to enforce them, most of them are ignored and the most obvious ones are the only ones enforced. If the regulation was simpler it would be easier to enforce because you would only focus on _critical_ aspects. Instead of simplifying, people campaign for more regulation, forgetting second order effects that make things less safe.