So yeah, VR/AR headsets aren't going to replace smartphones anytime soon. But they don't NEED to.
And it costs $3500 NOW, first generation product, but there is a reason why the put "Pro" in the name, the implication being that they fully intend to do a more affordable version.
So as usual, it's not going to be any of the extreme predictions. It's neither going to be a total failure that Apple will stop manufacturing them, nor is it going to be such an overnight success that the average joe will stop paying their mortgage and instead get a gadget.