So he helped him once. Is the lack of help afterwards "suppressing"?
No, banning his plays is.

Everything is relative. For example, to go fishing in the UK, you have to buy a license (if I'm not mistaken; if I am, take another suitable country). In Russia, you are free to catch almost anything you can without any stupid permit.
You're confusing legality with morality.

How very interesting. In the previous message of yours, you claimed that "great people left (or were forced out) in droves". Huh?
Both statements are valid. Lasted nearly seventy years, did the USSR.

According to the Great Soviet Encyclopedia, "1924, January 31st: The first constitution of the USSR passed by the second congress of the councils (soviets)". It was almost 1925, as you can see.
I think I understand now. You're quite right, the Constitution was ratified in 1924. However, it had been ratified in principle (by the First All-Union Congress of Soviets) - and the USSR had been declared - by the end of 1922.