I'm worried that this will require yet another config change on top of the already-ridiculous pile. (A listing was discussed 3 months ago at https://news.ycombinator.com/item?id=45696752 )
That's the third-best design they could have. Second-best would be having a toggle to turn on AI. Best would be going back to building a browser and leaving out the AI entirely, or putting it in some other product that they only consider funding after they get back to 50% market share for the browser.