Yes... I've seen most of those arguments... I think that they all still assume a bit and there isn't a clear logical step. The physics one is less convincing to me (it is also an old and known result), from the point of view of someone who studied Theoretical Physics, it looks to be a misunderstanding of the paper.

However... all of that aside, there isn't anything to doesn't say that it could be... just no conclusive hints that it is!