The point of style guides is to optimize for readability despite a cognitively diverse workforce coding in the same repos.

I would think they're probably even more meaningful in an agentic world.

Shitty generals can't review meaningfully review the work of their troops.

On top of that all, I just enjoy programming itself. It's less and less of the meat of a software job over time, but I was coding before I got paid for it, and I'll probably keep coding well after I can get paid for it.