I don't get this complaint. The Doctor isn't cuddly. One of the very first things we ever see the Doctor do is nearly bean a caveman to death with a rock.The episode was high quality, but I am not a fan of this continued bastardization of the Doctor (i.e. the continued and growing idea that The Doctor is, in reality, a truly terrible bastard).
I like the Doctor as my moral compass, not a guy you can't turn your back on.
Some Doctors have softer edges. But some are serious bastards, when you look past the goofy costume and get down to it. The eleventh Doctor has been pretty consistently shown to be one of the bastards, not one of the softer ones.