Their implication is that junior devs have more likely built up their workflow around the use of AI tooling, likely because if they're younger they'll have had more plasticity in their process to adapt AI tooling

Overall I don't quite agree. Personally this applies to me, I've been using vim for the last decade so any AI tooling that wants me to run some electron app is a non starter. But many of my senior peers coming from VS Code have no such barriers

Speaking of vim - adding and configuring copilot plugin for vim is easy (it runs a nodejs app in the background but if you have spare 500 Mb RAM it's invisible).

All the major players offer a CLI, for what it’s worth.

You won’t need Vim except to review changes and tweak some things if you feel like it.

Speaking as a senior dev, anecdotally juniors may indeed understand AI tools better, because they spend more hours a day coding and working with the tools, and they need the tools to understand the codebase or to be productive. Seniors have more hours stuck in meetings, developing specs/tickets for the juniors, code reviewing, etc. Seniors are likely to not bother with a prompt for simple changes in codebases they already understand.

Some old dogs resist learning new tricks.