Patriotic Socialism isn't a real thing, but libtards think it is for some reason. It emerged as a libtard pejorative against the basic Marxist-Leninist orthodoxy of 'Socialist Patriotism.' 'Socialist patriotism' is a core socialist value [1] which can literally be found in the textbooks issued to elementary school children in every Communist state in history.
p.380 "Cosmopolitism and Not Patriotism Is the Ideology of the Imperialist Bourgeoisie"