* LLMs are dangerously useless for certain domains.
* ... but can be quite useful for others.
* The real problem is: They make it real tricky to tell, because most of all they are trained to sound professional and authoritative. They hallucinate papers because that's what authoritative answers look like.
That already means I think LLMs are far less useful than they appear to be. It doesn't matter how amazing a technology is: If it has failure modes and it is very difficult to know what they are, it's dangerous technology no matter how awesome it is when it is working well. It's far simpler to deal with tech that has failure modes but you know about them / once things start failing it's easy to notice.
Add to it the incessant hype, and, oh boy. I am not at all surprised that LLMs have a ridiculously wide range as to detractors/supporters. Supporters of it hype the everloving fuck out of it, and that hype can easily seem justified due to how LLMs can produce conversational, authoritative sounding answers that are explicitly designed to make your human brain go: Wow, this is a great answer!
... but experts read it and can see the problems there. Which lots of tech suffers from: as a random example: Plenty of highly upvoted apparently fantastically written Stack Overflow answers have problems. For example, it's a great answer... for 10 years ago; it is a bad idea today because the answer has been obsoleted.
But between the fact that it's overhyped and particularly complex to determine an LLM answer is hallucinated drivel, it's logical to me that experts are hyperbolic when highlighting the problems. That's a natural reaction when you have a thing that SEEMS amazing but actually isn't.