I feel like a lot of people are missing the point. He's not saying games need to be easier, I think he's saying games need to be easier to pick up. There's a big difference between the two.
While many games are either easy to learn and easy overall or hard to learn and hard overall, the ideal "sweet spot" is a game that's easy to learn, but hard overall. Easy to learn hooks new players in, and hard overall keeps them there.
This is somewhat related to the number of buttons your game needs and the number of functions your game has. Most modern games have relatively complex controls that make it rather inaccessible to anybody who's not already onboard, especially games that overload a button to perform multiple actions depending on context, or require multiple simultaneous actions to perform basic functions.
If you give a controller to somebody who wants to learn how to play a console FPS for the first time, what you usually get (at least from my experience) is somebody who can do precisely one thing at a time, either move, look, or shoot (forget reloading, throwing grenades, melee attacks, switching weapons, or crouching -- those are all advanced controls (doesn't even include jumping, which many FPSes have flat out dropped, or the unique game mechanic for the specific shooter you're referring to)). Yet I think many would agree that being able to do all 3 simultaneously is a rather basic function of playing an FPS. And when the primary multiplayer game mode is online, there is no real way for these guys to get anywhere without getting pummeled by people that know what they're doing. In most cases, people get frustrated and go back to playing games on their phones.
You can't even get to the mechanical depth of the game if you can't get past the control complexity first. I think that's what EA is driving at. Learning a game for a lot of people is learning the controls, not the mechanics. Assuming EA isn't content with pleasing the same fan base over and over again, they'll want to attract new players as well, which complex controls is not conducive to doing. Their comment isn't for existing players, though it will almost certainly affect existing players, but for attracting new players.