Yep, that you have cited is one of many opinions. Everybody interprets facts according to own bias. For me the facts are important and the opinions not so much. Also it is not 2013 now and not only the already miniscule role of oil in total Russian economy reduced but also its role in government budget too.
I wonder what would be the same graphic for the Saudis.
[Also it is not 2013 now and not only the already miniscule role of oil in total Russian economy reduced but also its role in government budget too.]
https://www.statista.com/statistics/1028682/russia-federal-budget-oil-and-gas-revenue/
That’s about 1/3 of the 2020 budget of $329b
https://www.rbth.com/business/331534-russian-budget-2020