2. Automating away well-defined trivial tasks frees up more time for figuring out the difficult tasks.
3. If you're running solo, being able to ask for alternative perspectives or to validate ideas - even if that's against a compressed archive of Reddit answers - is still valuable.
4. How is this better or worse than making progress through asking questions on X/Reddit/mailing lists/IRC/Usenet/your local library? I'll tell you: it doesn't irritate other people as much, and it's likely a lot more efficient. I get it, "I spent 20 minutes with an LLM and made a one-page HTML website!" doesn't sound impressive, until you compare it - about a year ago - "I spent two days going through awful ad-laden tutorials and made a one-page HTML website!".
The big cognitive gap people might be running into - and I think you might as well - is that people think these LLM tools are there to replace people and to do things that weren't possible before. They specifically aren't. They're tools to do stuff we know how to to do, but a bit faster.
Nobody is making explicit claims of magic. Nobody - other than breathless media - thinks this will replace people doing the jobs they do today. It's just going to make it a bit faster and quicker to get some stuff done.
They're better screwdrivers, not replacement geniuses.
May I ask, have you tried to do something difficult with it? Have you concluded it's impossible, or are you guessing that it isn't due to a lack of signal? I think it might actually be impossible, but I still think they're valuable tools for the reasons above.