On the junior developer question:

A humble way for devs to look at this, is that in the new LLM era we are all juniors now.

A new entrant with a good attitude, curiosity and interest in learning the traditional "meta" of coding (version control, specs, testing etc) and a cutting-edge, first-rate grasp of using LLMs to assist their craft (as recommended in the article) will likely be more useful in a couple of years than a "senior" dragging their heels or dismissing LLMs as hype.

We aren't in coding Kansas anymore, junior and senior will not be so easily mapped to legacy development roles.