I have a lot of things to explain, and, nevertheless, you may disagree with me.
In 1917 two revolutions happens in out country, in February and October. This mean social and economic catastrophe.
After this foreign invasion begins - american, english, french, chezh.
So, the music wasn't very important question at this time.
Stalin understood, that new war isn't very far, and began industrialization. The jazz music wasn't important again.
So, you wrote the truth, but not all the truth.
Also, you wrote:
In 1932, after a period of terror, jazz was finally rehabilitated.
Terror just begins. And the terror wasn't applied to musicians - it was against priests, aristocracy, rich peasants.
If you interested, there is a russian artistic film about jazz at this time -
We Are from Jazz - Wikipedia, the free encyclopedia