Wadder I'm fully aware of the trade-offs of using VPN by Google, however for my security model it's something I am willing to sacrifice in certain situations.
Like I mentioned in my post, barring Google and Cloudflare, almost all VPNs have issues in streaming apps and on certain sites. VPN by Google is the first VPN I have come across where I get zero issues with general browsing or streaming services, as they partner with those sites to ensure they are still available.
I'm looking solely to see if this app can be configured to work on GrapheneOS in some way or another, I'm not looking for alternate VPNs.
Thanks for your recommendation nonetheless.