The reality of that is that ChatGPT in 2022 wasn't very good at Advent of Code. In 2025, it's much more capable. (AoC officially recommends not using AI at all. Which you shouldn't, so your brain gets exercise.)

> it's never been true at all.

Like, at all? The problem with "never" is entire platforms get deprecated and people get laid off. So sure, you can have a job in $technology for as long as you've got that job, but if you get laid off but $technology is deprecated, you're in for a bit of a rough patch.

For reference, here's a couple of $technologies that, 10 years ago, you have gotten a job in, but if you were laid off recently, you'll have a tougher time finding a job in:

Apache Mesos -> Kubernetes. Xamarin (mobile dev). Hadoop -> Databricks. Ember.js.

(Not saying it's impossible, just that you said "never" and "at all" so you'd have to get really lucky.)