This isn't a criminal case, this is a sport's governing body believing that a player of the sport has brought the game into disrepute.
Has Rio Ferdinand really done that?
Is it really still the English FA's jurisdiction if a civilian is at home (or in the car, in town, wherever) and sends out a message on their own mobile device about another civilian, also not involved at the time in any match run by that governing body?
Perhaps the FA should concentrate a little harder on matters closer to hand and let the player's club worry about what he does in his social time, instead of trying to impart their "wisdom" over every single facet of the highest-profile players' lives.
Everybody agrees that social media needs to be treated carefully for people in the limelight.
But this situation has got nothing to do with the English game, or the English FA.