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I see two problems.  Either its a google glasses or a VR headset size device.  We need in between, like glasses with augmented phone/watch integration.  But just my opinion.
Hard to say where the device lands but exciting
While the rumors are rumors, nobody is predicting this thing to be affordable even by Apple standards. Current guestimates are $2-3K. Seemingly their initial customer will be businesses (similar to Microsoft's HoloLens), and their "killer feature" will be virtual meetings (similar to Meta). It is expected to use hand/gesture tracking.      
I will add this though: I've used VR headsets extensively, including stand-alone/battery ones. When I read that they're moving the batteries and their weight off of your head and onto your waist my first thought was "about fucking time." The [high] weight of VR headsets is a major literal pain-point when you go from using them for a few minutes to all day. I literally had to take days off just to recover. >

People are loathe to wear something on their head.
Let alone a damn battery bum bag with wires going from it as well. >

If it is expensive enough it will be a fashion state that tons of people want.