Except when you use them for purposes other than declared by them - then it's on you. Similarly, you get plenty of warnings about limitation and suitability of LLMs from the major vendors, including even warnings directly in the UI. The limitations of LLMs are common knowledge. Like almost everyone, you ignore them, but then consequences are on you too.

> Provide manuals that instruct the operator how to effectively and safely use the power tool

LLMs come with manuals much, much more extensive than any power tool ever (or at least since 1960s or such, as back then hardware was user-serviceable and manuals weren't just generic boilerplate).

As for:

> Know how they work

That is a real difference between power tool manufacturers and LLM vendors, but then if you switch to comparing against pharmaceutical industry, then they don't know how most of their products work either. So it's not a requirement for useful products that we benefit from having available.