the problem is the misguided nothing that goals =played better than your opponent, and that another player who's been out for 4 odd weeks plus only really started to vaguely develop as a decent key back this year, should be rushed back in at the expense of this guy.
then you add in AB's stats that show as a whole he outplayed kennedy, yet still want to crucify him and drop him.
as others have said, kennedy is a multi winning coleman medalist. they don't kick the ball to him once or twice a game, he's their main go to guy, and considering there were only 3 goal kickers for WC.
instead of laying into Hartley's performance as some have, maybe just sit back and enjoy the fact the backline and team as a whole is working pretty well at present to restrict scoring in general.