Agreed, ChatGPT is nearly useless here compared to Whisper AI. Speech to text isn't new, but my experience is that Whisper AI is much better than any other speech to text I've used.
One benefit of this approach is that ChatGPT can also produce summaries which can help with early draft iteration or organising unstructured thoughts.
Yeah, if anything cleaning up speech to text (and probably character recognition too) is the natural use of (these kind of) LLMs as they pretty much just guess what words should be there based on the others. They still struggle with recognising words when the surrounding words don't give enough context clues, but we can't have everything!
(Well until the machine gods get here /s 🙄)
They're also (annecdotally) pretty good at returning the wording of "common" famous quotes if you can describe the content of the quote in other words and I can't think of other tools that do that quite so well. I just wish people would stop using them to write content for them: recently I was recruiting for a new staff member for my team and someone used ChatGPT to write their application. In what world they thought statisticians wouldn't see right through that I don't know 😆