Instead of rendering server side, render client side.
If they block JS, they get nothing.
In JS script check for hostname and if it matches their hostname, don’t render anything.
Sort of, in that the court's role is to be the authoritative interpreter of EU law, and EU law crosses national borders by definition.
But all domestic law in EU member states must comply with EU law, so the court can rule on domestic law insofar as it is to determine compatibility with EU law.