[themagician]

I found a somewhat solution to the latter problem. If you have an Apple One Family Plan, and an empty slot, you can just create a legacy user with a new Apple ID and add it as a family member. This account will inherit all the purchases and subscriptions, but it can have a different security policy.

[easton]

Can you not just sign into the iTunes Store without signing into iCloud? They’ve always supported that for legacy users that shared a single Apple ID for all their purchases with their family.

[themagician]

Nope. With E2EE, and I believe with Security Keys, you must be running a supported OS on supported hardware or you can’t sign in with your Apple ID for anything.