I'm sorry, this is is dangerously close to conspiracy theory territory. I am by no means, an apologist for Google, but I seriously doubt they have the ability/resources, or even motivation to manage route planning at such a microscopic level.

I recognize that they have been caught with their pants down with things like altering search results [1], but making broad speculative claims like this about the real world without any substantiation whatsoever is unfair and alarmist.

[1] https://www.wsj.com/articles/how-google-interferes-with-its-...