Upon first read I actually had the same thoughts as many and applied them to the google services as well as the application itself. However on reflection, yeah the services google provided were pretty impressive, especially after re-reading the following:

"Google CRE worked hand-in-hand with Niantic to review every part of their architecture, tapping the expertise of core Google Cloud engineers and product managers"

Architecture analysis may or may not be standard (I don't actually know since I've never had to deal with something like this) but that sounds great to me.