There's nothing wrong with showing the abuses of corporations but supporting liberalism and right libertarianism is supporting the current status quo and the interests of the Bourgeoisie. The point of antiwork was to show the abuses of capitalism and to move away from capitalist ideas.
How can you support the working class if you wish to maintain the current state?
No matter how much you regulate the market, someone out there is going to be exploited. These people may appear as an ally, but they are not.