“Unlike here, the only individuals buying Russian debt will be the Russians themselves. This will remove those rubles from the economy reducing the velocity of Russian money.”
Good point, that will help slow down their overheated economy, and with that, slow down inflation.
It is not so clear. The only Russians who will be buying Russian bonds will be those with money to spare, i.e. wealthier Russians. These are not the people whose rubles are driving up inflation, especially for staples.