Would the default Admin position not be adjusted to your preferences, since I only use one key and I am the only driver. I would sign in to Volvo ID and my Google acct and expect those to be applied to Admin requiring no further profiles.
It should work, the profile is beneficial if you have 2 drivers. It is nice as wife has her own profile and it is linked to her key and the Android Automotive system removers her apps and such. But one driver I doubt it makes a difference.