I'm not fond of the phrase "the AI will know you so well".

I know that to many people such a system would be a convenience working transparently particularly if they aren't quite sure what they're searching for or how to optimally phrase the query, but personally I really don't like them gathering that much data and tracking me that they know me that well.

I realise it's already basically unavoidable, but knowing how they use the data and why they collect it, along with how they track and target people, it doesn't reassure me.