Other countries have achieved far greater good for their countries without mass murder. I do not remember Britain wiping out English people to perform reforms, nor the USA wiping out millions of its people to modernise.

I don't remember NZ or Australia modernising through mass murder.

Stalin murdered people to protect himself. Russia could have modernised much faster and better if Stalin after getting to power had made it a democracy instead of a dictatorship.

Washington was given the choice of being King or making a democracy. His legacy was far greater because he choose democracy over personal gain.