Lol, it's not an argument from authority.
The claim isn't "google said so". It's "google is doing so". It's a claim to incentives and rational actors, or perhaps to revealed preferences.
If you want to get on a high horse around logical fallacies, make sure to understand them, else you reveal... something else, about yourself.
Google is doing something != they are doing the rational thing.
Suggesting otherwise is defintionally argument from authority.
You know you can just admit you’re a sophist and we can move on.