No. There is a lot more than that. The AI stuff appears in places in the UI where other things used to, like in right-click menus and when you are entering text into fields. And it's not opt-in. It's on by default. Unless you are willing to search for how to turn it off and open the non-GUI about:config stuff and modify raw settings in a text table (with no descriptions or help text next to them) then you can't even turn it off. Also, the AI stuff takes up disk space.