> It tells the percentage of reports from each manager using it, and how often suggestions are accepted. It seems like the kind of dashboard someone would make if they were planning to give out bonuses based on Copilot adoption.

That's one result. Another result is, due to "checking how often suggestions are accepted" is to objectively record how much help it is providing.

I assume the sitewide license is costly - this could simply be the company's way of determining if the cost is worth it.