There are a ton of problems with football announcing right now. Aikman is biased, so is Tony Romo, and so is Joe Buck (or he was during baseball). I know that there is unconscious bias. We see it with refs all the time (sometimes towards the home team and sometimes, especially in basketball, for or against certain players). It seems that in the off season they could address this.
I think the bias is connected to this obsession with stats. It means the announcers are not just talking about the game going on. Sure, a little history is fun, but it's stuff like "the QB hasn't thrown an interception at home for 15 quarters", then the QB will promptly throw an interception, and they'll guffaw about the "announcers jinx".
The other problem is this unholy wedlock between the pro leagues and sports gambling. They are always talking about the line, and now they even promote betting during the game.
If they would just say stick to the game, it would help. I was watching clips of Keith Jackson yesterday and wow, do I miss him. Now we get Gus Johnson with his stupid nicknames ("Maserati Marv"!) who is so pleased with himself he can't stand it, or that jack of all trades Chris Fowler who first names all the big time players and sounds as if he has a copy of "Football for Dummies" open in front of him so he can throw in technical terms.