Originally this was a reply to this article about a Windows feature called Recall, but there's a good argument the author's concerns resonate far beyond Windows and Meta to proprietary generally.
Back in 2020 when I took my class for my A+ cert I remember the instructor directing us to a Windows 10 debloating video tutorial to speed up a Win10 computer. If I recall correctly In that video the host point's out that one of the Microsoft services that ran in the background of every standard distribution of Windows 10 was a keylogger. It was one of the many things that got permanently turned off in the in the tutorial.