And if the same thing happened in the USA (which the Tenth Amendment prohibits), you would say . . . what?
Nice concern trolling. Centralization is OK because the RF constitution allows it; I see. Ever read Article 7 of that constitution, which declares Russia to be a “social state”?
I would say that even if the situation was similar, this solution would be untenable in the USA because of being unconstitutional. In the USA, plenary power lies in the states and powers are delegated to the federal government in a limited manner. In the RF, this solution is both time-tested and fully legal, therefore it is in Putin's toolbox and he is entitled to use it.
The RF is not the USA, and doesn't have the same culture, we need to get over that.