Yes, it's true about my manners: I do not suffer fools gladly. When people post childish comments, I treat them like children. The original author's claims are preposterous; most economists wouldn't bother answering such nonsense.
As for your "socialist" Diamler AG, its stock price today is USD $10.96. It is owned by its stockholders. The workers get nice bonuses. That's good, but it doesn't make it a cooperative.
You are dead wrong that German companies are not operating under a fundamentally free market system. They have stock, they have a board of directors, they sell their products on the open market, they raise additional capital when necessary. Yes, they also have many admirable attributes, such as the inclusion of workers' representatives on their boards. But these do not in the least alter their fundamental nature.
By the way, apparently neither you nor the original author know what the word "socialism" means. Socialism is an economic system in which the state--not the workers--controls the means of production. For good examples of socialist economies, look to the USSR before 1989, Venezuela, North Korea, and China before 1980.
I would very much enjoy a vigorous discussion of our disagreements, but that requires some acquaintance with basic principles of economics.