Every time things change, the change itself is different.

I remember some of my earlier issues with various languages. `Dim A, B as Int`, in VisualBasic one of them is an Int the other is a Variant, in REALbasic (now Xojo) they're both Int. `MyClass *foo = nil; [foo bar];` isn't an error in ObjC because sending a message to nil is a no-op.

Or how, back when I was a complete beginner, if I forgot a semicolon in Metrowerks, the compiler would tell me about errors on every line after (but not including!) the one where I forgot the semicolon.

"Docs say", "Compiler says", "StackOverflow says", "Wikipedia says"; either this tool is good enough or it isn't; it not being good enough means we're still paid to do the thing it can't do, that only stops when nobody needs to because it can do the thing. The overlap, when people lean on it before the paint is dry, is just a time for quick-and-dirty. LLMs are in the wet-paint/quick-and-dirty phase. You could get suff done by copy-pasting code you didn't understand from StackOverflow, but you couldn't build a career from that alone. LLMs are better than StackOverflow, but still not a full replacement for SWeng, not yet.