Beyond 2 has almost none of the sensor suite, no eye tracking, no meaningful compute, no pass-through video, no inside-out tracking, no gesture control, and requires two to three entirely separate units set up around the room to do any outside in tracking, yet it still weighs 4-5x what glasses weigh.

Just the displays and lenses will outweigh glasses considerably and there's nothing to strip back when you're down to display and lenses. Throw in a chassis and head strap and you're pretty far from glasses in weight and ergonomics.