That's their MO, isn't it? If criticism can be linked to the Right, they seem to think that's enough to dismiss it.
I've even heard the defence that OK so the editing of Trump's speech was, like, technically wrong but hey everybody knows that's what he meant, we just speeded it up a bit.
I also don't get the explanation that it was 'a mistake' - a mistake is ordering the wrong size t-shirt, or misjudging the distance between your car and a wall.
Editing a speech in such a way as to make the edit invisible to the viewer took planning, time and know-how.
It wasn't 'Oops, we mistakenly edited that so slickly that it looks like he's saying let's go right now and fight fight fight! Our bad! Silly us!'