Putting that question-begging aside, cynically, for a company on an AI kick it could be intentionally designed to make clearing out the old guard who aren't all in on AI easier and without severance.
In fact, it stands even without the everything-is-now-about-AI journalism gloss. The expensive, grumpy seniors with the pointed questions in meetings are largely the ones who feel most able to risk jumping ship in 2024 and treating them like naughty children or unreliable juniors really winds them up.
The wisdom of driving out senior staff, well, that depends on who you're asking and what are their metrics for success!