Wearable displays can do that but they were not designed to do that. Its called „augmented“ or „virtual“ REALITY for a reason. Focus is an issue in regard to legibility even if you dont use the 3d space. If you do you get even more issues with tracking, stabilizing, more focus issues as you generate defocus, filtering, occlusion limited fov and more. These devices are designed for rendering believable dinosaurs into natural environments. It will take a while until they deliver on the promise.