It’s an issue if it’s brought before Beis Din. If it’s brought before Beis Din, it’s enforceable. Today like previously. If it isn’t brought before Beis Din, then it isn’t sought to be enforced. If you know of any B”D case were it was sought to be enforced, share the case and we’ll have what to discuss. Since you don’t, you are engaging highly improbable and likely never occurring hypothetical scenarios.
Ben sorer umoreh is also actual enforceable halacha. Even if the set of circumstances leading to an actual case of it never occurred. (Even during the times capital cases were tried.)