You are misrepresenting this ruling. Any data that the user gives informed consent to share can be moved wherever the user consents. This ruling is about sending user data without any active informed consent.
Not so simple. Even with consent you arent really allowed to store in america because america is assumed to be an unsafe country (because govt can at any moment force a US company to show the data)
I don't think users can consent to ongoing general-purpose data transfers.
This is from the European Data Protection Board FAQ following the Schrems II ruling. Does the text of the new ruling say something different?
> 8) Can I rely on one of the derogations of Article 49 GDPR to transfer data to the U.S.?
> it should be recalled that when transfers are based on the consent of the data subject, it should be ... specific for the particular data transfer or set of transfers (meaning that the data exporter must make sure to obtain specific consent before the transfer is put in place even if this occurs after the collection of the data has been made)
> With regard to transfers necessary for the performance of a contract between the data subject and the controller, it should be borne in mind that personal data may only be transferred when the transfer is occasional. It would have to be established on a case-by-case basis whether data transfers would be determined as “occasional” or “non-occasional”. In any case, this derogation can only be relied upon when the transfer is objectively necessary for the performance of the contract
