The NY Times paper is behind paywall so I could not read it. However, I maintain contact with friends and relatives in Russia and as of 26 Apr 2022 there are no issues with email, general web browsing or videoconferencing.
Researchers in Russia face a blackout on the internet
There is no ongoing internet blackout, although the Russian government attempted several partial or complete blackouts in the last years during important events, such as elections. At the moment the Russian government is mostly concerned about blocking political speech and news on the Russian invasion into Ukraine. Many international news-making websites are blocked, and some social networks are blocked too — e.g. Twitter was blocked in Russia for a few past days, but today it seems to be working again, though no official announcement was made as to why.
Then they cannot submit any paper to non-Russian journals anymore.
Academic journals and their web submission portals are not blocked in Russia. Whoever told you that Russian researchers are blocked from submitting to non-Russian journals is not telling the truth. Having said that, Russian academics may face the following difficulties:
- Some Russian banks are blocked from using the SWIFT bank transfer system due to sanctions. International bank cards such as Visa or MasterCard are also restricted. If a Russian academic wants or needs to pay article processing or publication fees for their paper to be published, it may prove to be difficult.
- The Russian government is notoriously unpredictable at the moment and the laws/regulations change almost on a daily basis. In the last years a few Russian academics were imprisoned on a charge of "sharing state secrets" for sharing previously published information (academic papers and preprints) with their colleagues abroad. This "witch-hunt" is likely to continue, as the Russian government moves further towards punitive reaction and self-isolation.