It's certainly not as bad as it could be if there was more weight involved. Yet the light weight also means the device can easily slide when doing stuff like pushing buttons or plugging in cables. Sliding causes scratching. I believe these are the same feet as used on the Anedio D1. They ended up changing those when they redesigned it as the D2, to a more traditional footer with padding. I believe this was done because of complaints of scratching.
The cone feet sure look nice though. Very "HiFi" if you know what I mean.