I don't think that this recognition of what's happening as being non-separate is reflected in much of the cosmology community's thinking; it's not really understandable via logic; it's alogical. I can see how it might explain the Wheeler-DeWitt equation. I can also see how the multiverse theory could be a perverse attempt to explain the profound simplicity of what seems to be happening.

I would say that the perceived intelligent design is another facet of the self-illusion or separation-illusion hallucinating meaning and purpose into something that is totally chaotic and uncaused.

Yeah, the self-illusion can tell a wonderful story about where this seems to have come from and where this seems to be going, but it misses the fundamental simplicity that there is nothing actually happening. It only seems like it all makes sense.