Too many things don't add up, for example: SpaceX, and friendly commentators, have framed this as a highly experimental test flight. The most visible aspect of that are the heatshield test tiles on various parts of the upper stage.
That kind of testing is understandable to a certain extent. But it doesn't make sense to ditch the rocket in the Indian Ocean once you've run those experiments, instead of catching it, and having all the parts available to study.
That kind of testing is understandable to a certain extent. But it doesn't make sense to ditch the rocket in the Indian Ocean once you've run those experiments, instead of catching it, and having all the parts available to study.