So, one dude did not censor himself, during a cultural warm up era, ended up being kicked out to exile. Which was a fortunate outcome due to his previous fame. Hmmm, is that an example how people were free to do whatever in USSR? :) Is that more like an example how dangerous it was to not self-censor even to well known people with support (for some time) from the ruling elite?

Hearing parents and grandparents stories... And having talked to older artsy people who did grow up before the fall of USSR... Self-censorship was the default modus operandi. Sure, few didn't do it. Most of those paid the price either in gulags in earlier years or mental asylums later.