Yes, as I understand it, by “stock” Android OP meant any of these OEM-supplied Android installations as opposed to a custom version you’d install yourself. Although the “stock” Androids are different from one another, they all share the same relatively poor baseline privacy because they all send data to Google, on top of which they may also send data to the phone manufacturer and the cell network provider and possibly other organizations. This contrasts with custom versions of Android like GrapheneOS which are designed to be better for privacy and send less data to Google.
Yes, as I understand it, by “stock” Android OP meant any of these OEM-supplied Android installations as opposed to a custom version you’d install yourself. Although the “stock” Androids are different from one another, they all share the same relatively poor baseline privacy because they all send data to Google, on top of which they may also send data to the phone manufacturer and the cell network provider and possibly other organizations. This contrasts with custom versions of Android like GrapheneOS which are designed to be better for privacy and send less data to Google.