Your comment is like saying hardware engineering is useless now because the microchip was invented.
Prompting is yet another layer of abstraction. Untrained teenagers obsessed with chatGPT likely rival OP in prompting.
OP can likely write some random forest algorithm, its just not needed anymore.
I'm not an AI person, just a programmer, and I've found my time has gone into learning parameters to fine-tune + learning prompting. Maybe the parameters would have helped if I knew AI, but these are all layers that need to be learned.
My real world case is basically this. I couldn't fine tune(I think my problem was too hard, or Mistral sucks, or I suck).
ChatGPT4 could do the job with me speaking gibberish and a single shot example, couldn't use mistral + 10k examples for the life of me.
My project comes due at the end of April and I've been waiting since February...
Not sure if that's completely true. What if the prediction problem is based on company data e.g. predicting probability of click? Not sure how you could use ChatGPT for that. Also no one actually writes a random forest algorithm, you just import it from a library.
I did... My boss wanted it written in an obscure programming language in 2018.
When you mentioned prompting, i imagined you using vertex ai or smiliar 'slightly' lower level AI tools, but thats more ML Ops for me than AI research or AI integrator.
Have you seen this "oldie but goodie" from Philip Greenspun's website (esp. the graph beneath "Not So Very Serious Stuff"): https://www.philip.greenspun.com/careers/
If there is an "AI Winter" it is unlikely that a Ph.D., new or old, would keep you employable. Look to other more predictable but related fields: math esp. statistics and engineering.
FWIW n the background is looming a great revolution in energy generation: fission is now possible.