WP flimsy touchscreen when connected on usb/charger

Is MS aware of this issues? Have they acknowledged it?

I was just at a carrier store in my country. They received Lumia range (710 + 800), and as I started to play with the 800, I quickly realized that people who have not played extensively with a WP before (99% of them), will not know that in use, touchscreen is buttery smooth, they'll think that either the phone is broken somehow, or that WP is bad. I can imagine some of them, or maybe even a lot of them, skipping WP because of this. I know I would.

On a side not, I don't use words as "sexy" to describe gadgets ever, but OMG.. If they don't keep this polycarbonate design for the apollo flagship, I'll kill myself.