I made the mistake of buying the Xreal Air 2 after your review and I keep having the impression, that your reviews are too light, because they don't explain well enough what people are getting, or rather more importantly, not getting.
The biggest issue is that clearly Xreal doesn't actually define what they are giving you. The web site remains one of the worst examples of design over anything, plenty of very expensive models posing somehow, but clearly not using the glasses for anything but decor.
It's clearly not virtual reality, but it's also not augmented reality. Much like Apple the reserve the right to interpret what they are giving you, and when you hunt for specifics, it turns out there are none. None of the functions those animations are hinting at, are actually guaranteed. And good true augmented reality is much harder than VR and not what you get here. That's why they used to call it XR or "something with reality" before they started inflating promised features as AR to match the price.
Because with the glasses on, reality is so dimmed, it becomes unusable (= reduced reality?). E.g. one of the advertised use cases is that you can use the Xreal glasses to project addition screens above say a physical laptop screen you're working on. Seems very useful in planes, trains but also a hotel room, where you'd really like to still have the big screen setup from your home/office virtually around you.
But not only does the software projecting these virtual sreen have terrible performance issues, in that the contents of those virtual screens smear terribly and make text unusable (while your brain tries valiantly to focus on something that doesn't sharpen until you freeze your head in position for a second or two), the laptop screen at the bottom, where the outside reality should still come through, is dimmed to the point, where it no longer usable.
And that's even more true in the upper area, where the µ-OLEDs are projecting: when they are off, they should be transparent for true augmented reality, but the level of transparency within the OLED area is so bad, that you better not try walking around with the glasses put on. But in the lower part, where there is no OLED, the variable shading gives you different levels of transparency, but it's like 20/25/30% not 10/50/80%, which would be where it starts to be usable.
I'm glad they now offer two IPD variants, that was a terrible oversight before, as everything on the outside of the virtual screen area just became even more of a mush, even without the smeared repaints.
I'd say the only use case that works is watching video on a virtual big screen. For that, it's a lot of money.
And while the speakers mean your ears won't hurt and sweat from headphones, everybody in the same room or cabin will have to endure what you hear, too. That kills the travel use very quickly, but also office video conferences etc.
With the Xreal Air 2 Pro I made the mistake of believing that updated software with the baseline usability would arrive as promised before the 30 day return window expired. It didn't and then it became a battle to return the unit.
I did succeed, but can only say: caveat emptor! Make sure to test everything from the very start and if it doesn't work for you, return immediately.
And have a look at their help forums before you click on buy.