I really don't know how effective LLMs are at that but also that puts you in an extremely narrow niche of development, so you should keep that in mind when making much more general claims about how useful they are.
(I did do web development and distributed systems for quite some time, though, and I suspect while LLMs are probably good at tutorial-level stuff for those areas it falls apart quite fast once you leave the kiddy pool.)
P.S.:
I think it's very ironic that you say that you should be careful to not speak in general terms about things that might depend much more on context, when you clearly somehow were under the belief that all developers must see the same kind of (perceived) productivity gains you have.