Aikman's argument is extremely stupid & wrong in so many ways. Lets break it down.
The NFL is not on 4 days a week. They only play on Saturdays for 2 weeks of the season. Thurday games dont begin until halfway through the season. So half the season is still 2 days per week, like the "good old days"
This theory of "over-exposure" is bullshit. People crave NFL football, the demand is high. Giving people more of what they want isnt going to make it less popular. There is zero tangible reason to believe NFL popularity is going downhill anytime soon.
The primetime matchups this year were horrid, but that doesnt mean people wont care about NFL football. Put good primetime matchups and people will watch.
Even if NFL football somehow became less popular, that doesnt mean another sport will become more popular. Fans dont flock from one sport to another.
And complete LMAO @ someone saying soccer is going to be the #1 sport in 20 years.