I think this argument would hit a little harder if Apple hadn't just released their thinnest device ever that is sporting both a touchscreen and a dual layer OL

I think this argument would hit a little harder if Apple hadn't just released their thinnest device ever that is sporting both a touchscreen and a dual layer OLED that's better than any of their laptop screens. I've never broken out the calipers but imo most of Apple's thinness comes from the body and not the screen. You could probably find a number of touchscreen laptops with similar thickness displays. On top of that you could compare the weights of non-touch and touch models, the 15.6" LG gram for instance gains 0.03lbs in the touch model.