Ben Carson may not be experienced in the bureaucracy, but as the saying goes, it’s not brain surgery. :-)
His having grown up needing the services combined with the potentially negative optics of attacking a black man who has done so much good for the community (his only “sin” really being a Republican) meant they were not about to waste any of the limited good will and outrage to summon an opposition to his appointment.
And I imagine going against DeVos is going to be harder than they think. She has the resources to create a nice PR firestorm if she truly wants the job and its hard to sell her as being evil when she already spend much time and effort helping others.
Phrased as a continuation of the Democrats “war on women” and they might well collapse in disarray.