The toggle for the popup is in (as you might expect) the settings hamburger menu in the AI Panel. There's even a remove button! Lots of new things have been added to browsers over the years, and these AI features are becoming incredibly popular as more users recognize the utility (and what they actually are).
This just seems like some more anti-AI hysteria.
It's clutter for a feature that I'm not going to use. I'm not upset it's there for those who want it, but it's also nice to be able to get rid of it.