I mean this data will most likely be more useful for surveillance/ads than for AI. Nowadays with AI they can make it look like they are only a couple steps away from a very intelligent personal assistant and therefore make it seem more plausible that they need your data to make that leap. But in reality I feel like it is not the level of AI that could leverage personalization, at least not in the context of personal assistance. In the context of behavioural mapping it is of course a super lucrative deal for them. There are already very useful tons of AI stuff that they can add which does not require personal behaviour info (at least not to this generality) and yet they don’t seem to spend as much effort into those and instead they are like “we need all your info stored somewhere for this very super (and mandatory) AI search assistant”. Big red flag.
“I have nothing to hide” is as only as good as what the government thinks is illegal. And that may be far from reasonable and can change very quickly, just look at US or UK.