2. There is no need for any tracking to implement this. It can be done on the client.
2. True but it's somewhat useful to be able to use your account on different devices and retain your history.
No, we're talking about accounts who already had it (as part of broader setting) disabled for them, in a context where the data in question can (contractually) only be used to provide the service anyhow.
> 2. There is no need for any tracking to implement this. It can be done on the client.
Pray tell me how you can do client side search history recommendation for the first query I make after logging in.
That doesn’t contradict that it was switched off intentionally.
> Pray tell me how you can do client side search history recommendation for the first query I make after logging in.
Logging in to what? Are you saying you want your search history synced between your browsers? If so, that’s a solved problem that doesn’t require Google to track you.
(Web browsers store previously visited websites)
Smart systems which sometimes work and sometimes don't are vastly more frustrating than dumb systems which do exactly what they're told, every time.