If you're taking a really high level look at the whole problem, you're zooming too far out, and missing the trees themselves. You chose the wrong parents to be born to, but so did most of us. You were interested in what you were interested in. You didn't ask what's the right thing to be interested in, because there's no right answer to that. What you've got is a good head on your shoulders, and the youth to be able to chase dreams. Yeah it's scary. In the 90's outsourcing was going to be the end of lucrative programming jobs in the US. There's always going to be a reason to be scared. Sometimes it's valid, sometimes the sky is falling because aliens are coming, and it turns out to be a weather balloon.
You can definitely succumb to the fear. It sounds like you have. But courage isn't the absence of fear, it's what you do in the face of it. Are you going to let that fear paralyze you into inaction? Just not do anything other than post about being scared to the Internet? Or, having identified that fear, are you gonna wrestle it down to the ground and either choose to retrain into anything else and start from near zero, but it'll be something not programming that you believe isn't right about to be automated away, or dive in deeper, and get a masters in AI and learn all of the math behind LLMs and be an ML expert that trains the AI. That jobs not going away, there's still a ton of techniques to be discovered/invented and all of the niches to be discovered. Fine-tuning an existing LLM to be better at some niche is gonna be hot for a while.
You're lucky, you're in a position to be able to go for a masters, even if you don't choose that route. Others with a similar doomer mindset have it worse, being too old and not in a position to them consider doing a masters.
Face the fear and look into the future with eyes wide open. Decide to go into chicken farming or nursing or firefighter or aircraft mechanic or mortician or locksmith or beekeeping or actuary.