AI is an always-wrong sometimes-useful mathematical model that can live forever, just like the number 13 for example, so doesn't really need a soul. But a few numbers *seem* to have souls.
From a law perspective, a corporation is considered a legal person. It won't be long before an AI machine will have the same rights and responsibilities.
We live in interesting times.
I think all they used AI for on Now and Then was to separate Lennon’s voice from the muddy background piano on the cassette recording he had made decades ago. They weren’t using it to conjure up a facsimile of Lennon singing. I’d agree it wasn’t the Beatles’ most soulful song but IMO that wasn’t AI’s fault.