That’s a totally different product. The Meta glasses don’t have a screen, only camera paired with voice UI.
If we’re looking for a head-mounted device that’s useful for blind people, taking away the camera and intelligence and replacing them with a screen definitely is not it. You’re losing the useful parts and replacing them with a useless one.
AFAICT, none of the XReal glasses have an integrated camera, and the accessory camera on their website just says "coming soon". Without a camera, it's not suitable for the purpose.
You've suggested a device that takes away the one thing they need (the ability to perceive the world without sight) and replaced it with the one thing they don't need (the ability to overlay content onto sight).
I use mine all the time for mostly watching movies or gaming but sometimes work
They are legitimately one of the best devices I have and I’ve been in AR a long time