This does seem to be the attitude DS is taking, but it does feel really unsettling to me as a non medic. For context, this year (2nd year), pass mark on the formatives (that don't count towards the end of the year, but I gather are supposed to give you an idea about how you are doing), DS was a bit below average on the first one, got 39.6 on the second (which was then rounded up to a pass, as the pass is always 40%), failed his third (32%), did realise that maybe he needed to work a bit harder (he has, IMHO, been doing way, way too many other things) and has just passed the most recent one at just below average score.
Next stop finals for the year, so we shall see, he knows he has a lot of ground to make up but knows it and is starting to crank up, and insists it will be head down (which knowing him, it will be, he knows he hasn't been studying that hard - hasn't really had time to be studying given what else has been going on, so if he does put his head down he would seem likely to pass).
But to me this feels really unsettling. I am not sure how I feel (as a non-medic this is my first encounter with medicine, no-one in our family is a doctor or has done medicine that I know of) trusting my life to someone who got 41% throughout their time in medical school (or even the 57% he just got on his last formative where average was 58%).
And periodically he says things like - Oh, I didn't bother learning X, you can't learn everything right? And I am sitting here going - do I really want to be seen by a doctor who maybe took that attitude to whatever it is that I have (or the background in a healthy patient that tells them that what I have is not normal)?
So it is interesting that you also seem to be taking the same attitude, but don't know whether to be reassured by it or not.