I heard that before. Borland Delphi, Microsoft FrontPage, Macromedia Flash and so on. I learned how in 5 years or so, these new technologies would dominate everything.
Then I learned that two scenarios exist. One of them is "being replaced by a tool", the other is "being orphaned by a tool". You need to be prepared for both.
That said, even if the specific products like Cursor or ChatGPT are not here in 5 years, I am confident we are not going to collectively dismiss the utility of LLMs.
Some stuff does happen, of course, but most prophesied things do not happen.
All tools I mentioned before were useful for programming. They didn't got worse. Still not enough to keep them relevant over time.
I chose those tools as an example precisely because, for a while, they achieve widespread success. People made awesome things with them. Until they stopped doing it.
What brought their demise was their inherent limitations. Code by humans on plain text was slower, harder, but didn't had those inherent limits. Code by humans on plain text got better, those tools didn't.