> that they can take it apart and put it back together again despite its complexity.

It's definitely not this, since that hasn't been true since ~2010 CAFE standards required ECUs + their array of feeder sensors, all usually factory-locked.

>> certain developing nations are still adding dirtier fuel sources

I'd look at this from a more nuanced viewpoint of certain nations still adding sovereign fuel sources.

Read: India / China and coal

That's punting the problem in the same way SELinux did. Agent loops are useful precisely because they're zero config.

Problem: I want to accomplish work securely.

Solution: Put granular permission controls at every interface.

New problem: Defining each rule at all those boundaries.

There's a reason zero trust style approaches won out in general purpose systems: it turns out defining a perfect set of secure permissions for an undefined future task is impossible to do efficiently.