it is all about civilizing them. one could argue that the amount of resources being dumped into Chechnya is a sheer waste.
those do not consider that instead of huge monetary spending there could be another war, which is: 1) will require much more money 2) is dangerous for Russia's ideology and democracy.
so changing them will work, it will work with money, more money Russians spend on making Chechnya a better place will return with huge profits.
as for Stalin, he was a smart man, but his preposition was much worse than that of current Russia. he had less choice of how to deal with the minorities, some of which he personally hated.