Apple's Unifed Search Patent

So it seems like a bunch of computer science/tech literate people at a level deeper than me don't think that this patent should be valid. From my understanding these people are saying that its much too broad and that it is patenting the idea of a search engine using AI. Is that correct? I'd be interested in hearing a counterargument from someone who has a computer science background. Admittedly I'm hearing it from biased sources, so if someone with computer science knowledge has a counterargument that would be great