Specifically, I don't know. But Aurora is an open source client that uses google play APIs to download and install apks. It's used by users who want to install apps from google play without having any google play services (and their unreasonably terrible privacy implications). The account is required I assume to authenticate to whatever network requests they're using.
I cannot imagine this being allowed in their TOS. The app is a reverse engineer of their APIs.
I cannot imagine this being allowed in their TOS. The app is a reverse engineer of their APIs.