I agree that, as far as access to information goes, we're all equal. The big question is whether we actually ACCESS that information or not. I can tell you that Philly homers read more of the philly papers than I do, for instance. Still, I've long maintained that if you want to be SSOG, this is all you need:
http://www.rockymountainnews.com/drmn/nfl/
http://www.denverpost.com/broncos
Pay special attention to Jeff Legwold. He's the best.
On the other hand, while everyone has access to the information, homers tend to have a better grasp on how it affects the team, because they're naturally more familiar with the team. I mean, anyone can read what Shanahan says, but homers tend to have a better understanding of what he means by it, just because they've had more experience with dealing with Shanahan quotes. Also, Homers are better at picking up trends, because they're paying attention every week rather than just from time to time. For instance, you might see Heap's bad game last week and think of it as an isolated incident, whereas I watch Denver so often I know that they *shut down* stud TEs like nobody's business.
Another advantage homers bring is that, since they read EVERYTHING, they remember older articles and such. If you go looking for stuff on Westbrook's injury, you'll find the articles written in the last week, while homers might remember a piece written a month ago that had a nice tidbit in it.
The final advantage homers offer is analysis of the games themselves, rather than the news. For instance, newspapers are fine and all, and game logs are great for getting stats, but a homer's likely to know that Jake Plummer had a horrible game in week 1, not because he was playing poorly, but because his offensive line was buying him no time, his receivers were dropping lots of passes, and St. Louis was selling out against the run to keep him inside the pocket. Likewise, I can tell you that a large reason why Denver does so well against stud TEs is because they sometimes put Champ Bailey on them, but that isn't always the case. For instance, in the first 6-8 games last year, Bailey was too injured to match up against the more physical TEs, and this year he's staying more on one side of the field than on any particular receiver. The reason Denver has shut down stud TEs in those games is because they use what they call a "Big Nickle" (2 LBs, 2 CBs, 3 Safeties), giving them a more physical DB to shadow the TE.
Anyway, long story short... while any non-homer could absolutely get all of the information themselves, no way are they going to access such a huge volume of data for all 32 teams, and even if they did, they still wouldn't be able to process it all. The result is that homers are a very valuable tool.