From the Ars article it references:

I was disappointed to learn that the most distinct feature of the Logitech Signature AI Edition M750 is a button located south of the scroll wheel. This button is preprogrammed to launch the ChatGPT prompt builder, which Logitech recently added to its peripherals configuration app Options+.

That’s pretty much it. Just a shortcut to an AI tool, so being mappable is a huge positive so people can actually use the button.

Definitely a gimmick.

But I remember there being a mouse/gamepad that really did us AI to fine tune aim in first person shooters. I think Ars did an article on those too. Not sure if it was commercially available or just someone filing a patent tho.