Per learning from others after encountering an unfamiliar problem, I think there are rose-tinted glasses here. 90%+ of the time, either someone else had already provided the relevant answer at Stack Overflow or I could find it on a documentation page, a blog. There is no social engagement then. Just search. That also hasn't gone away, as LLMs can also provide sources to justify their answers.

Per the human element, the author is in part relaying about formative experiences from youth that you won't easily repeat, and also experiences that are not decoupled from the work as it still exists, unless you are entirely remote, which is not a LLM-specific problem.

All of which to say, the emotional element behind it is valid, but the diagnosis is off the mark. I think the human element, should it be jeopardized, is in part through the complacent convenience of remote work and disinterest in community participation. But, communities still exist, and tech communities historically were always niche. As it stands they're probably bigger now than they ever were.

There are still new frontiers with software where LLMs will be less effective. Yes, there is less friction than before for learning technologies, but all this does is move the goalpost as we can accomplish more with our time.

Instead of hacking things out through trial and error on mature stacks (with or without others), you'll be closer to the cutting edge and have different problems. Many of which will still be technological in nature.