Some of these "Cowboys fans" have become obsessed with what is now known as Dak-hate. When you engage with them to try to flush their reasoning out, they repeat falsehoods and make claims that the facts/stats don't back up. Logic, rationalization, fact-based discussion? All thrown out the window. There is zero benefit to engage in a discussion because their own personal "eye-test" is the only thing they need to repeat obsessively that Dak is an average to terrible QB.
And if you observe these Dak-haters outside the topic of QB, you will see they struggle at contributing with good thoughtful discussion in general. Some are constantly engaged at battle here which means their focus is on winning debates rather than contributing to the conversation. Put the obsessive ones on ignore and your experience will improve.