I still think it might be health reasons
Let's not jump into rash conclusions here. I know you like your health theory but most likely a reasonable explanation is that the music production has been divided and handled differently this time around. Everything is pointing to that direction in my opinion.
And what if Conrad Pope has been conducting the score? Does it somehow lessen its value in our eyes and ears? What is Shore is using orchestrators. Does that mean that it isn't his music anymore but somehow the orchestrator changes his style and voice? Shouldn't a good orchestrator do the exact opposite and assume the voice of the composer he is hired to help?
So I still don't understand the panic that has been plaguing this discussion for a while now, even though it comes out in the form of humour and jokes. We will hear the results of these recording sessions before Christmas when the soundtrack comes out. Let's not make too far flung judgements on the score before that based on very little information.