But these days I run a one-man business, and LLMs (currently Claude Code, previously GPT) have written me a ton of great code. To be clear, when I say "great" I don't mean up to your standards of code quality; rather, I mean that it does what I need it to do and saves me a bunch of time.
I've got a great internal dashboard that pulls in data from a few places, and right now CC is adding some functionality to a script that does my end of month financial spreadsheet update. I have a script that filters inbound leads (I buy e-commerce brands, generally from marketplaces that send me an inordinate amount of emails that I previously had to wade through myself in order to find the rare gem). On the non-code front, I have a very long prompt that basically does the first pass of analysis of prospective acquisitions, and I use Shortcut.ai to clean up some of the P&Ls I get (I buy small e-commerce brands, so the finances are frequently bad).
So while I can't speak to using LLMs to write code if you're working in any sort of real SaaS business, I can definitely say that there's real, valid code to be had from these things for other uses.