raccoondad
The fact that Play Services are sandboxed with no special privileges or access on GOS is not an opinion.
The fact that Aurora Store reduces security and therefore also privacy (as security is a prerequisite to privacy) and shouldn't be used isn't an opinion either, it is based on facts and recommendations by the GrapheneOS project.
Maybe I have worded myself poorly:
It is a valid goal to completely avoid Play Services.
But you are not doing that by using any apps that come from the Play Store or bundle Google libraries.
Aurora Store doesn't change this, at all. It only makes you less secure and private, but it doesn't stop any Google telemetry or tracking or data collection.
So there is no reason to prefer Aurora Store over sandboxed Google Play Services.