I am trying to stay open-minded here.
As it is, I don’t see a usage that justify install a privacy nightmare on the system level, an app, or even a browser extension.
The only time I have been using any AI stuff lately is when Brave_Search/Copilot_on_Bing do a quick summary of the search results, and give me the link to the website. It don’t need to constantly see what I am doing for that.
I use chatgpt to help run the TTRPG I run every week. Primarily I use it for reference images of NPCs, but I’ve also generated battlemaps and stuff. I don’t usually use it to help with the writing, but it can be pretty helpful when coming up with names, or when you are in need of some inspiration for a particular session.