By whom?
https://www.youtube.com/watch?v=r38Epj6ldKU
https://www.notebookcheck.net/MacOS-Big-Sur-is-spying-on-eve...
You mean OSCP? It's hilarious how much hate apple gets for that when verisign/sectigo/digicert/letsencrypt "spying" on every website you visit across most operating systems elicits... nothing. If anything that's worse, because people finding out you visit grindr.com is probably way worse than people finding out you use iTerm2 or whatever.
From the links above, it seems that Apple's Privacy policy reserves the rights to monitor ALL your data and usage of its devices, and that it then actuates this policy using snooping mechanisms in Mac OS. Do you agree?