How about that Gore run up the middle where Cam and another player were in perfect position to fill the hole and impact the play, but they just pull up and stop? That is what he is referring to. It looks awful and is nothing like real football.
The game is improved, but the player interaction is still terrible for the most part. They flat out can't fix it and it really hurts the game. You are right that there are instances where the gang or multiple person tackle attempt triggers correctly and looks good, but way too many instances where it doesn't.