That's not true. Again, I don't know what play you're talking about. But on the Lamar TD run for instance, all the QB is reading is his first step. The second the edge moves towards the A gap, it is a keeper. There is no reason for the edge to continue down the line when the QB keeps it.
This is why offensive scheme matters! You can have a defender be responsible and in the right place and then people think he's nowhere close to where he is supposed to be. You are making an argument for the offense, not an argument that Micah is not doing his job.