Right, so a magical dictator can only achieve about the level of central authority that a Muggle democracy has. Meanwhile, magical Stalin is simply not possible. (That doesn't stop Dark Lords from trying to become magical Stalin, because they are irrational. But they never succeed, even though they cause a lot of problems while they try.)

However, I very much doubt that MoR!Voldemort will turn out to have been Light All Along (I don't know the proper TVTrope name for that). This would require major departures from canon as to how he went about it in 1980. Or at least he would have to have been very confident, extremely unimaginative, and positively jesuitical in using his ends to justify his means.