Looking for some pre 2020 content about Russia and Chernobyl...
https://nsarchive.gwu.edu/briefing-book/nunn-lugar-russia-pr...
> Documents from the highest levels of the Soviet Union, including notes, protocols and diaries of Politburo sessions in the immediate aftermath of the Chernobyl nuclear disaster in 1986, detail a sequence of cover-up, revelation, shock, mobilization, individual bravery, and bureaucratic turf battles in the Soviet reaction, according to the “Top Secret Chernobyl” e-book published today by the National Security Archive.
> Key sources include protocols of the Politburo Operational Group on Chernobyl that were published in Russian by the journalist and former Supreme Soviet deputy Alla Yaroshinskaya in 1992. The posting today begins with Yaroshinskaya’s essay (written exclusively for this publication) reviewing the Chernobyl story and her own efforts dating back to 1986 to document and expose the lies and the secrecy that surrounded the disaster.
https://www.popularmechanics.com/culture/tv/a27787022/cherno...
> "The fact that an American, not a Russian, TV channel tells us about our own heroes is a source of shame that the pro-Kremlin media apparently cannot live down," Shepelin writes.
How the Soviet Union stayed silent during the Chernobyl disaster - https://wapo.st/3shRS4M
> Information inside Russia was sparse, too. Russian residents and even some officials were left unaware that the accident had occurred. In the news reports that trickled out, Soviet media stated that nuclear accidents like Chernobyl were "virtually impossible."
> ...
> The Soviet Union's refusal to release any information speaks to the mentality of the Kremlin. Perhaps the best explanation of trying to make sense of this mentality came from Ellen Goodman writing in 1988, shortly after the accident:
> Exactly a year ago, in Moscow, I had a conversation with a young journalist who acted as interpreter. After a session with three bureaucrats, which bored him as much me, we went to a local coffee shop and talked about journalism and censorship.
> Andre was among the elite of his Soviet generation. He was informed about America -- down to our frequent-flyer coupons -- and not reflexively defensive about the Soviet system. Yet, at one point, animatedly debating our countries' attitudes toward information, he reached for this analogy, "In the U.S.S.R. we do not tell a patient if he has cancer. Many times we treat people like they are children to be protected."
> And in many ways, those living in the Soviet Union at the time would have agreed.
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While I can't say for certain, the reporting suggests that there is a deliberate willingness to collectively forget about Chernobyl within Russia.