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I think this is a "grass is greener" type argument. There are also massive problems with pass-through AR (VR with cameras).

I'm not entirely sure it is. Pass through has serious engineering hurdles to get over first with latency, power consumption, weight etc.

But the waveguide method has limitations rooted in physics and math that won't change until 30%+70% stops equalling 100%.

I know which one I'd put more Hope's in.