The creativity of a large group of people will find new and interesting ways to leverage this technology. We will see more AI-assisted IDEs, debuggers, assistants, document "interpreters" (e.g. converting contracts into litigation, specifications into running code, rough ideas into whole new literary or film worlds), and so much more.
And, as far as I can tell, we are terrible at gauging the speed of AI advancement. See [1], [2]. These may be cherry-picked examples, but some of these are orders-of-magnitude off.
"Training to use AI will be a job in itself"... until it isn't. Adversarial AIs are probably already in the works to teach these LLMs right from wrong. Such training will take time, for sure, but the next leap is pretty clear in my mind: human obsolescence given our current (at least here in US) sensibilities. I'm not saying new sensibilities won't come, but historically, it has taken a long time for such base-line cultural shifts to take effect. Even after armed conflicts.
In my opinion, the question isn't, “[can] we automate away all the jobs, including the fulfilling ones?” The question is, "What will you do when your job becomes redundant?" The best AI researchers may be way off on their predictions here... it could happen in the next 12 months.
Thankfully, to some extent, this is just the output of LLMs and predictive analysis. But I'd bet someone is already tweaking a prompt/chat along the lines of "Build me an AGI which can make decisions on its own."
[1] https://www.weforum.org/agenda/2017/07/how-long-before-a-rob...
[2] https://www.forbes.com/sites/forbestechcouncil/2021/05/06/ar...