Major capitalist countries are extremely authoritarian, the issue is not inherent to any ideology or mode of production.

Capitalism has the need for a strong privately owned military-industrial complex to protect the assets of its ruling class. This complex needs to sell weapons to sustain itself financially, so violence, war, repression, imperialism, colonialism are natural consequences of capitalism and don’t even need any “personality disorders” to happen.

“But authoritarian communism happened” gets an “eh ok sure whatever” from me given the state of the capitalist world, only a few elites within the imperial core are living a life free of authoritarianism right now (and that’s only because they don’t really notice it).