>Except that you already agreed to this behaviour when you signed up.
It may come as a surprise but not everything written in a contract is in fact enforceable. I can demand that I get your firstborn when you cancel your subscription, doesn't mean that's going to happen.
GDPR gives you the rights to delete your personal data regardless of you having a subscription so I'm pretty sure this is a lawsuit waiting to happen.
It should be noted that the data in question here may be personal in the sense that they belong to the user but not in the sense of the GDPR.
Whether the GDPR apply to data stored on that service can only be judged on a case by case basis after having looked at the data in question.
In any case, I'm not sure that they prevent their customers from deleting data. It seems that that content is public unless deleted if a customer cancels their paid subscription.
From the wording in the TOS it sounds like this is only possible before cancelling your subscription. There is no such requirement in the GDPR. At any point, do you as a data subject have the right to have your information erased, or stop a service provider from processing your data.
It may come as a surprise but not everything written in a contract is in fact enforceable. I can demand that I get your firstborn when you cancel your subscription, doesn't mean that's going to happen.
GDPR gives you the rights to delete your personal data regardless of you having a subscription so I'm pretty sure this is a lawsuit waiting to happen.