So far in my experience watching small to medium sized companies try to use it for real work, it has been occasionally useful for exploring apis, odd bits of knowledge etc, but overall wasted more time than it has saved. I see very few signs of progress.
The time has come for llm users to put up or shut up - if it’s so great, stop telling us and show and use the code it generated on its own.
b) Even if “everyone is using it” it doesn’t mean it is useful. The usage could be adequately explained by e.g. marketing, being forced on them by management/policy, etc. Not everything with high usage is useful. I can e.g. quickly think of chewing gum (which is also used by a lot of developers), or the ANSI standard keyboard (as opposed to the ISO standard keyboard).