Let's face it, what if your job was to be on TV, talk about football and produce decent ratings? In reality, most players are good people who work hard and are as good as their genetics and the system in which they play allows them. But you can't just go on about that. You have to get people riled up or make stupid predictions that, if they do come true, you can brag about and if they don't nobody remembers anyway.
This sells weak beer, thin condoms, cars with wings, buffalo wings, guys with deep cowboy voices selling whatever...and it keeps you employed.
And, here we are, talking about these guys and making them relevant, so it works.