I can confirm that when I restrict Google apps, including play services, it works. For example, if I block internet access for Google Play Services, I can’t receive GCM notifications anymore. Beyond that, if there is some other backdoor that goes around my VPN and restrictions, there isn’t much I can do about that.
My opinion on the video is that I don’t trust the code of someone that is that unstable. If I were to go with a custom ROM, I’d probably go for LineageOS.
I can confirm that when I restrict Google apps, including play services, it works. For example, if I block internet access for Google Play Services, I can’t receive GCM notifications anymore. Beyond that, if there is some other backdoor that goes around my VPN and restrictions, there isn’t much I can do about that.
My opinion on the video is that I don’t trust the code of someone that is that unstable. If I were to go with a custom ROM, I’d probably go for LineageOS.