McArdle on Rationing

Just brilliant:

If you design a formula to deny granny a pacemaker, knowing that this is the intent of the formula, then you've killed granny just as surely as if you'd ordered the doctor to do it directly.

McArdle makes a point to explicitly walk away from the socialist label which, of course, is her perogative. This leads me to wonder though: Learned liberals may not think that they believe in the ideals of socialism because they were not raised in an academic tradition that told them - this is Socialism, this is why it's good, this is why you should embrace the label. Despite this, they have learned and internalized the concepts of "economic and social justice" which are the foundations of 21st century Socialism. What is the difference between their vision and the Socialist one?