It's probably a little of both: dangerous and expensive. This article makes a good case that the cost is at least part of the reason.

I wish the article could have been a lot tighter and shorter. This is not earth shattering information that requires a New Yorker length piece of investigative journalism.

This was nothing like investigative journalism; it's just LLM spew. It could have been written in a handful of paragraphs.

Also dangerous is expensive. If you cause damage you sometimes need to pay for it.