It looks like a fairly inefficient way to write to me. What I've learnt is that writing and editing are two different things, and you shouldn't edit as you write. So you write a first draft quickly, without worrying about the exact words too much, and then edit. The reason this is better is because writing and editing use two different brain "modes" - writing is best done in diffuse mode because it is creative, whereas editing is best done in focused mode.