judging a character by today's standards is not only bad faith but a terrible argument.
While I'm not entire sure whether such claim is true or not (or even if Stalin had any say in that), you have to understand that material conditions back then were much different from today's.
Does this "redeem" the CPSU in this regard? Not really, no, they should be criticized, but to claim Stalin was a terrible man because of this one policy (that he either had no say in or had no real power to change if he wanted to) is just bad faith. Stalin was not the king or god emperor of the USSR.
great article, comrade.