Look at the Falcon rocket history. They started out at a very similar point, though at a smaller scale. And yet now they are comfortably human rated. They have landed the last 171 times in a row without fail, with another one coming this evening to add to that incredible number.
The guy at the helm is a terrible person, but this does not discredit the absolutely insane progress they have made.
The space shuttle was never meant to be 'reusable' but rather 'refurbishable.' The big difference is that Starship is designed from the ground up for rapid reusability, without manually checking each of the 24000 unique tiles of the STS orbiter.
With the stainless steel construction, SpaceX is aiming to use their new upper stage up to 3 times a day with only refueling and a basic check in between. It is a complete paradigm shift from traditional rockets.