I'm not sure this addresses the criticisms in his post. it's possible he's salty about the loss of power, but his complaint is that the site is systemically biased. a better rebuttal might be to show how it's not?

Ok. It's systemically biased BECAUSE it is a power structure. What power structure does the left not own, or at least have a lot of control over?

Look at the Trump Phenom. He isn't hated because he's bad or ineffective or corrupt. He is hated because he seized power and Isn't a leftist.