It's nonsense to say that Hunts aren't intended to be shared when they've freshly added a "kill 1000 ShB S ranks" achievement with a mount attached. Achievements like this are only realistically possible by sharing hunts, linkshells and third party sites. They know this. It's a part of the game now.

A few minutes immunity, or the S rank zone message popping up a few minutes before spawn, wouldn't hurt. If someone complains about EP after that you can outright ignore them because the immunity means the Hunt has gone through a fair wait time.