These topics are closely related, as Android is a Google product. They develop Android. And they're regularly leading the way with new developments. Good and bad. I think that's why you see a mix of Android and Google news here.
I'm also ok if both of them are posted here, as most people use android with Google Play Services (GMS). But I'm annoyed when the two used as a synonyms. E.g "Android will get a new XY feature" than I open the article and I see it will be a feature of GMS not mainline android.
On a basic news website, or even in a more casual lemmy community I wouldn't be bothered with this. But we should be a bit more professional in a dedicated android community, with less clickbaity titles.