You said you supported Social Democracy not Democratic Socialism. Dem Socs are well-meaning but idealistic, not optimistic but the political philosophy of idealism. Soc Dems are supporters of a kinder capitalism for the Imperial core but keeping the child slaves mining cobalt in the Congo.
The fact that you think these are the same proves the original posters point that you should read theory. They were harsh but you were implying that keeping exploitation of the third world is preferable to socialism.
Dude you still don’t stop worker exploitation, don’t solve the contradiction of working and capitalist classes, don’t end imperialism or colonialism (social democracy outsources exploitation to the third world)