Felger isn't stupid. He didn't become arguably the biggest media member in the market by being an idiot. He came up with his "cap is crap" thing years ago, principally because it was a method by which he could always bash the Patriots, no matter what the circumstances were. Team has $5 million in cap space and Felger wants them to sign $50 million worth of players? Well it isn't for cap reasons. Its because the Patriots are making a big mistake by not doing what he says. So he in turn can bash them relentlessly and get people to pay attention to him. Rinse and repeat. Remember that another one of his big commandments is that NFL owners are greedy, selfish, got where they are due to inheritance or luck, and above all else, are cheap. Heck, that's a hallmark of practically all media members for the local team who are looking to troll the fanbase and get attention. They can always go back to the well about how the owner is cheap and get callers to either argue with them, or rip the owner along with them for hours on end. Even when it is someone like Robert Kraft who is none of those things he claims all NFL owners are.
The Pats don't have $25 million in cap space to trade for Jimmy G? Doesn't matter, the cap is crap. He needs to come up with another team that he claims will swoop in and take Jimmy G instead? Go with the Saints, despite their horrid cap situation. Even though it will never happen in a million years, he gets to use them because the cap is crap. And so on. It is easy to have his takes when you pretend that the salary cap isn't real. It's not him being an idiot though. It's him purposely coming up with this position, even if he doesn't necessarily believe it, because he knows it will suit his argument and get him attention.