What likely explains the poor standing of leopold 2 among historians today?

Its most likely because of the role he had in the extermination of huge amounts of people in Belgian colonies at the time. Sorry if it dont help but i think its this. 

Master planned communities outside of chicago. note: population density means people living in an area per square mile. chicago, an urban and highly populated area has a much more higher density than a desert, amish community, settlement, or nomadic region.