An allegory for social pricing.
I can imagine the knee-jerk leftist reaction is that this society is "fascist" - an inversion of what I perceive to be the case. Consider how typically "leftist" this fictional society is: a hyper-maternalistic nanny state that strives to control the smallest aspects of human interactions - how folks think, act, feel - to the point of punishing the protagonist for the "crime" of being insufficiently sociable ("coldness"). That's the kind of state that would be invented by, and managed by, hysterical, dumpy, overweight female sociologists and mewling "manginas" agonizing over "microagressions" and other paranoid delusions of a demented political correctness. That's pure egalitarian leftism, particularly in the rampant canting hypocrisy evident - a hypocrisy especially on display in the ending: originally punished for being insufficiently sociable, the protagonist is now punished for being overly compassionate. Or is "sociability" defined with respect to the diktats of the nanny state?
This story is essentially an allegory for the sort of social pricing that exists today, punishment not for "coldness" but for the crime of ultimate multiculturalist blasphemy - White folks defending their own racial interests. It's the "crime" of "racism," and not "coldness," that exists in today's society. Further, in Europe's "hate speech" and "race relations" laws, the punishments are de jure and not only de facto. Indeed, this mid-80s Twilight Zone remake episode clearly shows us the direction where we are heading, in fact the direction to which we have to a large extent already arrived, due to the White man's inability to say "NO!" and stand up to the System's proscription of our most fundamental human rights - of free expression, of free association, of defense of our ultimate interests.
We are all Mitchell Chaplin now.
Note: I understand that the author of the original short story may well be a member of the "tribe" - that's irrelevant. It's the story and its implications that matter, not the original author.