Wave Particle Duality, the Observer and Retrocausality

The videos are about consciousness collapsing the wave function - I already provided reasons to look at the alternative for both videos in my initial reply.

But I am specifically talking about the paper in my first post - what specific refutation is provided in the video of the argument there, wherein a non-local Observer is posited as an alternative to seeming retrocausality? 

In fact the PBS video even agrees that there remains the possibility of a global consciousness, the Idealist Bernardo Kastrup even gave timestamps and I quoted him in my initial response to you.

So it seems the Kafataos/Narasimhan paper is actually in line with the PBS video, as it makes an argument for that global consciousness.

You misinterpreted his brief mentioning of global consciousness. The fact that in the whole video he talks how some of the fathers of QM changed their minds about the importance of consciousness in QM. How he describes why experimentation says it is not required and after all that was said, the only thing that stuck was a brief mention of global consciousness? Which by the way was merely lip service. The current understanding concurs that a conscious observer is not required.