You can't turn off Copilot in the web versions of Word, Excel, or PowerPoint

That's because AIs can't survive by eating their own output. The only solution they know to ward off model collapse is more human input. They need you to use AI to feed the beast. And if it's built into your office apps, they get that data for free.

That's part of why every service and system are getting integrations, It's not for us it's for data harvesting.

In the end that's what "Windows Recall" will be used for. Access to every moment of every user for every app... Can you imagine the training data that would provide? An AI that could run any program ever created.

I work in MSFT although not in office org. Based on my experience, the reason is far more trivial. Someone has a half year goal (KR) that says I/my team will increase engagement by N% from X to Y. Some people, whom I don't respect, when presented with a goal like that immediately start doing this (tfa) kind of stuff. Many people, when towards the end of the period some of their genuine (i.e. delivering good stuff) bets don't pan out and the numbers don't number, start doing things like this or generally throwing stuff at the wall to see what sticks.

I bet there was a meeting where someone axed the off button because numbers.