All users already owning this device are confirming, that the temperature never exceeds 45°C even under high load, but you still keep claiming, that the cooling is a bad design.
And the only prove are your very accurate calculations based on your excellent knowledge of thermal engineering.
The links you were providing earlier doesn't prove anything, too, because the only one ranting about this device in all threads you linked to was you.
Btw.: Could we please stop calling this metal thingy a "radiator", but a heatsink instead?