We really don't know what he thinks of the game, good or bad. And even if we did, I'm not sure that I would put much stock in it.
He isn't a gamer. He may know Football, but he doesn't know game mechanics. I would think that his critiques would be more along the lines of are these real NFL plays, versus something simply gameplay related.
For example, I'm sure he was thrilled with the product back in 89. It was 11 on 11. Had real teams, players, had pro type plays. Did that game play realistically? Not so much.
Now obviously tech was different back then and not as capable, but somehow I doubt if John gets into what is capable today and really demands that the game reflect that.
Bottom line, I'm not sure if we should be really put too much stock in whether Madden is happy with the state of the game, considering he gets paid. There's probably a lot of Miller Lite endorsers that drink Bud Lite.