Depends.

To some degree, some folks esp. for "lights out" machining are just pushing buttons and loading/unloading pallets of stock/parts, but usually the job description for that is "machine operator".

A machinist is expected to understand feeds and speeds and how they interact with toolpaths and materials and tooling.

The big question of course will be how things fall out with the on-coming generation of 5-axis machines which are intended to be AI-driven:

https://toolguyd.com/new-ai-powered-desktop-cnc-machines-202...