The Apple Watch is a tiny square that's on your wrist. This could take up your entire arm. The Apple Watch may have a better resolution, but more space is the killer feature here. You can actually do stuff on this, unlike a microscopic little watch.
That's great. Then show some examples of that. My point was that the examples in the linked video were meh at best. The map's resolution was useless in functionality. The texting example was also weird, in that I don't want every other person in the room to see my texts. Things can be fun, but bad examples just don't do it justice.
Think of those as proof of concept. Imaginative types will come up with all sorts of interesting use cases. It is a pixel display on fabric, do whatever you want with it... pulse it to music, send notifications, just animate living textures...
I think the point here isn't whether this is ready for commercialization and practical consumer use immediately. The point is they made something that works and is easily comprehensible as to the kinds of things it makes possible. That's really impressive!