Hell I've seen things that shouldn't be up there just scooped up by Microsoft, I had to opt-out because it was just showing my PII look ups into my Microsoft accounts search history.

https://support.microsoft.com/en-us/windows/windows-search-a...

The final straw for me was when I saw that Microsoft Defender by default could send files to their servers for inspection, and I couldn't see what was sent previously, nor was this an opt-in option, it was on by default. I have anything from PII to highly proprietary things on my computer, I don't need them being "flagged" by Microsoft for arbitrary reasons. I have been on Linux full time for the last few years since.