It draws a lot of power, it'll get pretty warm. But there is a difference between dissipating heat by design and overheating.
Someone needs to point a heat gun at the thing and see what temp the chips reach, my guess is the system spreads heat very well and it's not a problem.
Very warm to the touch could however cause unforseen issues a few months and years down the line with plastic warping or other secondary failures.
DF have a heat gun, let's hope MS hasn't asked them very nicely not to use it.