> Niantic took a lot of time and effort to ensure that this data was deleted, obfuscated or has as much precision removed as possible, as quickly as possible.

Define "as quickly as possible". How long after the fact can Niantic tell that I was at Burger King for lunch?

If the answer is anything more than a week, I don't think they are really trying. Pokemon Go does need to keep some data longer because it's used in-game: when and where you caught a Pokemon that you still have; whether you have ever visited a given Pokestop (but not when); how long you've had Pokemon in a given gym. But the game never needs to save actual paths you followed.