I believe the logic is that the behavior that leads to the neighborhood play is done so to avoid hard contact, so they don't want to incent collisions with the rules. Problem is that people like Ahmed are abusing it when there's zero chance of the runner breaking up the DP and they get the ball to 1st a half step faster. I've heard umpires say that the neighborhood play is an invention of sportswriters and announcers. Major league middle infielders have to be quick and nimble to play their position, and they typically barely drag their toe across bag when making the turn, but it's hard to tell unless you're right on top of the play, like an umpire. Basically, they're rarely 'phantom touching' the bag - it's just too quick to notice in real time on the broadcast. So, if they generally are touching the bag when turning double plays, if umpires are to be taken at their word, then it should be reviewable, at least in flagrant cases. Any competent shortstop or second basemen should be able to scrape their foot over the bag, avoid the slide, and throw the ball to first.