It's not a double standard. And apparently, it's only you on the other side of this argument.
If a runner coming home swings or punches directly at the glove of the catcher, he's out. If he is diving for the plate and simply collides with the catcher, it's not interference. It's a pretty simple line to draw, and it makes sense. I don't see the issue here unless it's just that you're a Yankee Fan.
