Disney demanding password change

If you subscribe to Disney+ through Apple, then Disney+ wouldn’t know anything about your account or its password. They get a quasi-anonymous Subscriber ID from Apple, not your Apple ID credentials. Only Apple can set requirements for your Apple ID credentials.

Try contacting Apple Support about how this could be.

Each service you subscribe to should have its own unique password.

You should never use a single password for multiple services.

Changing the password for the Disney+ service should not have any effect on your Apple ID.

Even for things I've subscribed to through Apple, they have their own login creditials. Disney wants you to update your password for your Disney+ login, not your Apple ID. The fact that you chose to use the same information for both doesn't mean that changing your password for Disney will change your Apple ID password.

And I agree with what Mac Jim ID said. Reusing log-in creditials across multiple services is a disaster waiting to happen. It's one of the major ways miscreants find their way into your accounts.

Same password on all accounts is the dream for an identify thief. That should really be changed now. Definitely check your passwords at Settings > Passwords > Security Recommendation to note if they have been involved in a security breach.