US Authoritarianism

Also, I wouldn’t say that control by the state is less left-wing

Control by the state is still anti-socialist - it doesn't matter how much Marxist-Lenninists protest otherwise. There is only one type of "worker's state," and that is one where the means of production is actually democratically controlled by the working class - not a pack of bureaucrat party-parasites pretending to "represent" the working class by waving little red flags at every occasion.

Social democracy, as it is typically understood, is absolutely leftist

There is nothing leftist about social democracy - it's warmed-over liberalism that serves no other purpose other than protecting the liberal order from working class revolt. And, like all forms of liberalism, it's proponents will happily hold hands with fascism as soon as it's precious status quo is threatened from below.

Bismarck also didn’t “invent it”;

"Invent" is a strong word, I suppose... but it's a question of six of one and half-a-dozen of the other. They both serve the exact same purpose and deliver the exact same result. The truth about this ideology remains the same - it is thoroughly ant-socialist and pro-capitalist... and there is nothing leftist about it except in the minds of those whose brains have been addled by "red scare" and "free market" propaganda.