This is a frequent argument I see them make and it's a manipulative ploy to validate oppression narratives that a lot of moderate Whites get roped into believing as well as reinforcing left wing Whites into self hating viewpoints. Reddit is one of the largest social media sites in the world, we often hear facebook and twitter are the modern town square, I'd argue reddit is as well (it also is a good way of peaking into our enemies heads and looking at what arguments they are making) hence why it is important to prepare and have effective rebuttals/responses to these arguments in a debate/marketing context.