Superuser isn't marked as being staff

from django.contrib.auth.models import BaseUserManager

class UserManager(BaseUserManager):
    def create_user(self, email, dob, accepted_tos=None, password=None):
        if not accepted_tos or accepted_tos is None:
            raise ValueError("Users must accept the terms")
        user  = self.model(
            # make sure that all the email addresses throughout your app are formatted the same way
            email = self.normalize_email(email),
            dob = dob,
            accepted_tos = True
        )
        user.set_password(password)
        user.save()
        return user

    def create_superuser(self, email, dob, password):
        user = self.create_user(
            email,
            dob,
            accepted_tos,
            password,
        )
        user.is_staff = True
        user.accepted_tos = True
        user.is_superuser = True
        user.save()
        return user