Capitalist dictatorship (IE liberal / bourgeios "democracy") by definition is corrupt, in that it is a form of goverment where propertied and rich interests control the country, to the detriment of its exploited workers, who have no say or representation in their government. You're "free" to yell into the void as long as your complaints don't affect anything, at which point your movement will be crushed violently.
Its pure projection that liberals call every other form of government that challenges their rule a "dictatorship", and rely on decades of ingrained anti-communist cold-war propaganda to cement it.
Unfortunately many people accept their propaganda willingly without challenging the cold-war dogma, or looking into how actually or previously existing socialist states had functional, substantive democracy, not the fake "democracy in name only" that liberal countries are selling you.