I think this is what I am thinking of. Kind of a predecessor of modern machine learning.

I remember that as well.

Edit; moved comment to correct reply.

This isn’t exactly new. I heard a few years ago about a situation where the ai had these wires on the chip that should not do anything as they didn’t go anywhere , but if they removed it the chip stopped working correctly.

Yeah. Go into the system settings app, Autofill and Passwords. Select only the “AUTOFILL FROM” for Firefox.

Did you set Firefox as the default iPhone password manager?