Also, it's hard to argue "full self driving" means anything but the car is able to drive fully autonomously. If they were to market it as "advanced driver assist" I'd have no issue with it.

Definitely won't get an argument from me there. FSD certainly isn't in a state to really be called that yet. Although, to be fair, when signing up for it, and when activating it there are a lot of notices that it is in testing and will not operate as expected.

At what point do we start actually expecting and enforcing that people be responsible with potentially dangerous things in daily life, instead of just blaming a company for not putting enough warnings or barriers to entry?

Then the issue is simply what we perceive as the predominant marketing message. I know that in all legally binding material Tesla states what exactly the system is capable of and how alert the driver needs to be. But in my opinion that is vastly overshadowed by the advertising Tesla runs for their FSD capability. They show a 5 second message about how they are required by law to warn you about being alert at all times, before showing the car driving itself for 3 minutes, with the demo driver having the hands completely off the wheel.