The real agenda behind the complaints comes down to exposure and promotion of the Cowboys to a guaranteed nationally televised audience every year. Over the years, the various complaints have been lessened or eliminated, yet new ones have been created to keep the fight alive.
Need proof? You rarely ever hear about it being an unfair advantage for the Lions unless they are thrown in with the Cowboys, but you very often hear how the Cowboys, by themselves, have the unfair advantage.
Other proof? They added a third game on Thanksgiving night where a random home team is selected each year and they've made more of an attempt to have the Cowboys play on the road prior to the Thanksgiving game.
The biggest proof? They've added Thursday night games all season long so several other teams have Thursday games throughout the year now at home.
You could at least look at it objectively 10+ years ago and say, yeah, it's a slight advantage for the Cowboys and Lions, but that's their reward for playing on a day no one else wanted to long ago. But now, the only real basis for being upset about this is if you 1) hate the Cowboys or 2) are jealous of the Cowboys attention.
The proverbial nail-in-the-coffin solution would be to give the Thanksgiving away teams a bye the week prior to Thanksgiving which would give them 11 or so days before the game. The problem is if they do that, it will pretty much kill any chance the Cowboys or Lions ever lose their guaranteed Thanksgiving home games and also make any future complaint's agendas transparently obvious.
/reality
