It’s not really democracies vs dictators, it’s countries in the US’s sphere vs countries not in the US’s sphere. It becomes more obvious and easy to see then. The OAS has been a puppet of US interests since the beginning (there’s a reason they didn’t let Cuba in). It literally started by a pledge to fight communism in the western hemisphere. Basically, it’s the US empire and it’s puppets and allies vs a rising new order of old colonized and sanctioned countries, which admittedly looks scary, but hopefully will one day lead to a multipolar world where people can deal with their own local issues without worry of western interference (which has almost always been net bad for the people of those countries in the global south Asia, Africa, and South America).