Several very talented rocket designers have since left SpaceX. They might have succeeded regardless (or despite) of the development methodology. It doesn’t mean

Several very talented rocket designers have since left SpaceX. They might have succeeded regardless (or despite) of the development methodology. It doesn’t mean the methodology was a good one. And even if it was, the level of Elon meddling in this project has gone up an order of magnitude. That’s a lot of stupid to have to work around.