what i hate most about this (and the discussion happening in the comments), is that nobody is even defining "AI". "artificial intelligence" is not a technical term. what is mozzila doing exactly? what does it mean to put AI in the browser?

There is kind of software that is created using techniques very different from the techniques used to create the vast majority of socioeconomically-important software until about 4 years ago. We need a name for this thing that definitely exists in reality and definitely differs from software created the traditional way. That name is AI. We're probably going to keep on calling it that even if lots of people protest that having "intelligence" in the name is misleading or erroneous.