Most of the uses for a HUD-IRL do not require personal ownership of the device. Like, the Louvre rented 3DSs to visitors for AR and guided visits for years. Guides and pop up info are appropriate on industrial settings, for personal hobbies it is overkill. Now, name tags and relationship data on people you interact with? weird and creepy. You mean like, for use by healthcare professionals? maybe, still no need to personally own one, and there are gigantic ethical issues to solve by having cameras constantly on during people's most vulnerable moments. For disability support, IDK, it might have uses, but it is still weird creepy and invasive, due to constant camera on and facial recognition active. You would have to trust 100% on the tech company behind it, and Meta is not exactly the most trustworthy corporation, by far.