Please do not add AI services to Firefox. They have a clear track record of being scraped without permission, ignoring robots.txt, actively circumventing IP blocks and hallucinating dangerously wrong information. This is not a thing to be endorsing.
Who does this change help? I can see the use for separating the icons for some people, but forcing that on everyone just doesn't make sense. The choice should have been in the regular settings menu, not hidden away in about:config. Please revert this...