I'm less pessimistic because I remember how system level Twitter/Facebook integration turned out (it was removed).

To all the downvoters,even though this reply is to you, yes, there was the twitter integration that went away, but also SIRI listening in at uninvited times, to learn.

Apple may not be the worst offender, but they do from time to time, introduce things that have to be pulled back later.

Will the "Use Apple AI" switch go away? We just don't know, and there are aspects of MacOS that I detest, like search always starting in "This Mac" instead of the working directory, that I have to change almost every time, and search beginning as soon as you type in a search term, (enter the beach ball) rather than waiting a few letters, while slowing down your typing. These may never go away.

And there are lots of other examples on mac forums.

What or who determines what goes away and what stays, begging a fix from some app vendor?