@FinchHaven @smallpatatas @tokyo_0
Not really. You can't technically restrict someone from getting to your public content. Unless you know their network addresses. You can make it unavailable via WebFinger or Mastodon API, but it still will be available as a simple web page while your post is not followers only or private.
So I personally don't see how this could help against malicious actors. Also I'm not sure why it's needed when the actor is not malicious.