Ruby on Rails scaffolding didn't make backend developers obsolete. I know you said GPT-X, but GPT-3 is at the boundaries of technology. The jump to GPT-4 will either take much longer or be much less impressive than the jump from GPT-2 to GPT-3. I would say that your job is safe from automation from GPT. But the technology that might put you out of job, which I personally think will not be something like a neural network, might be spontaneously discovered in the next 10-20 years just like the spontaneity of smart phones. To answer your question, be a human; be adaptable, be useful.