It's basically like a funnel, which can also be used the other way around if the user is okay with quirky side effects. It feels like a lot of people are using the funnel the wrong way around and complaining that it's not working.
The issue is that the vast majority of user-facing LLM use cases are where people don't have these high-quality starting points. They don't have 40k tokens to make 400.
But yes, the default mode of LLMs is usually a WikiHow and content farm style answer. This is also a problem with Google: The content you get back from generic searches will often be riddled with inaccuracies and massive generalizations.
Not being able / bothering to come up with relevant context and throwing the dice on the LLM being able to do this out of the box is definitely a serious issue. I really think that is where the discussion should be: Focused more on how people use these tools. Just like you can tell quite a bit about someone's expertise based on the specific way in which they interface with Google (or any information on the internet) while they work.