These media guys make a living by sharing their opinions and thoughts on the team. They get paid good money for doing it. I would say that they are much smarter than posters that share their thoughts on these boards for nothing. There are many posters that see themselves as important and many are blowhards. They are not important enough to see the money that comes from that.
That doesn't necessarily follow. For one, most of these experts who get paid don't actually get paid all that much. Many people who have better options would very likely be able to generate better content in JJT's position, for example, and they don't because football is a pastime and they make more money doing something else with their day job. Also, local sports media gets paid, not for having the most accurate takes, but for writing things that will generate relatively wide appeal to a generally uninformed fanbase. Fans like us are not the norm, and they're not really who a lot of these opinion pieces are targeted at. Some of these professionals are obviously very bright. It's equally obvious from reading their stuff that many are not. It's not exactly something you can hide.
There are blowhards everywhere, so that much I agree with.
For my part, JJT is lazy and irritating and not very good at his job. There are journalists more critical of the Cowboys that I like better, anyway.