Isn't that a gross misstatement of the ruling? I'm not even a lawyer and it seems to be saying that when making a motion to dismiss, you assume the plaintiff's

Isn't that a gross misstatement of the ruling? I'm not even a lawyer and it seems to be saying that when making a motion to dismiss, you assume the plaintiff's argument is true and then see if the case has merit. So the ruling saying "even if the argument is hypothetically true, we can dismiss the case" is not the same as saying, "the argument is true".