What hampers the West in Global South is the fact that the entirety of Global South has at some point suffered under Western colonialism and or have had their governments overthrown, installed and manipulated by the CIA. The Russians have never really abused nations other than those in Europe.
Additionally, none of the countries in Global South, all of whom are traditional societies, have to buckle under to Western globohomo imperialism with Ivan now there to give them other options.
For all of its evils, and they were to one degree or another there for all to see, the West gave the Global South an economy, infrastructure, education, laws, finance, medicine, industrial agriculture, etc. As bad as it was for some, the net effect was to build nations. Or at least the cornel of a nation. The fact some of them have failed is mostly due to their own internal dynamics*. Arguably, what some of them have done to themselves is worse than anything the West did.
*One of the popes, I’ve forgotten which one, outlawed cousin marriage. The effect was to break up the clans and weld larger numbers of people into a nation. The Global South is largely still made up of clans. As long as this is true, they will be failed states.