> Images are often too smooth, videos too robotic and rhythmic, water too shiny, etc. Trained eyes can easily distinguish between AI and real.

That's likely to get better. Last year, consistently getting fingers and arms right was tough. This year, there are AI-generated violin playing videos.

> I would never assume the AI answer to a consequential problem to be authoritative, unless it shows me the source and I can click on the link to verify the source and the data presented (search engine use case).

That remains the elephant in the room - the tendency to make up fake answers. Until that's fixed, LLMs are only useful for problems where the cost of such errors is an externality, dumped on the consumer.