This is a prime example of a "feature" that I'm sure someone thought was a brilliant idea, but actually gets in the way of normal use and is highly annoying.
For example, I'm copying/pasting a bunch of CRCs, and some of them apparently look like dates, so whenever I copy one that looks like that, I get a "helpful" popup suggesting that I create an Outlook appointment. 🙄🙄
Definitely should not be on by default.