Is there a difference anyways between Russian and Muscovite? After all, Muscovites imposed their culture forcefully all over Russia as much as they could.
And I think it is a reminder to the people of Dagestan, Buratia, Altai, Bashkortorstan etc that they allow themselves to be taken advantage of and killed by a tribesman from the plains.
Now I really hope he's successful, so this will come back at you.