It could be a real recruiter from Google.
Google has outsourced all hiring, their "internal" recruiters are temps working from an external sweatshop.
There are plenty of issues and disincentives. They recruit for Google but they are not allowed to say that they work at Google themselves. They couldn't care less about the company because they don't work there and have zero benefits.
In my experience, if you wait a month to reply to the reach out email, there is a good chance you get a delivery error recipient not found, because the recruiter is not contracted by google anymore. The churn is insane.
Facebook and Apple use internal recruiters (in London). My experience with them was much more positive.