They are going to remove Windows Calendar in 2024 and force replace it with Outlook. Out of curiosity I clicked the opt in "preview" for this change and it opens Outlook, which I have never used, and wouldn't let me do anything unless I "linked" my Gmail address. Just so I could open a calendar.
So I closed it and when I need to look at the calendar now, I use my Macbook instead.
It's so infuriating how Windows is turning into a total shitshow lately.