...... I think the experts who argue for non-interference, unless the whale beaches, are the most sensible. They don't really know why the whale is there, whether it is accidentally there or there because it is sick or dying and has come into shallow water to die or whatever. They are, after all, highly intelligent.
Everyone wants so much to help, and the hardest thing to do is to resist the temptation to take action, but perhaps the best thing is to keep a distance and make everyone else keep a distance so they don't add stress to the whale's predicament.