I haven't used one myself but I was impressed with how a friend could interact with the real world while playing a game in the Quest 3. I refuse to fund Facebook though.
Apple here is dreaming far beyond what they're actually able to technically produce, even at a $3500 price point. I do hope Apple actually reaches the point of competitiveness in this market because Facebook needs some competition, and most of the smaller players are not competing very well. That void will be filled by Chinese companies if left to linger, much like DJI has come to dominate the higher end quadcopter drone market for lack of better alternatives not run by Chinese companies.
Is your concern mostly about battery life? I think they mentioned some new processors that should handle the computing properly. I guess much like most tech keeps improving so will batter life over time but not sure if that's moving forward at the same pace.
The battery situation is just overall awkward. You're tethered to a battery you have to keep in your pocket. They obviously didn't want to mount the battery to the back of the strap for fatigue reasons. And 1-2 hours battery life is fine for some occasional gaming, but you aren't going to be wearing the thing while folding your laundry into a suitcase like this ad seems to imply.
They theoretically could have squeezed a little more performance/watt with the M3 SoC but it seems they manufactured the boards expecting to get this out earlier.
a macbook compared to windows laptops has a very impressive battery life though I have to admit, I'm usually quite anti apple but that one caught me by surprise when I had to use my partners for a week during travels