The plaintiff is arguing an equally absurd notion, that because they are suing on behalf of the estate, the estate never signed up for Disney+ because it didn't exist before the death.
So you know, it's all absurdity vs absurdity.
The reasonable human thing would be to say that an autosigned agreement should have a higher bar on terms and in particar no provision in it can be valid for irrelevant things to the immediate service at hand. (Several others have made the same conclusion.)