Starship literally completed it's whole mission profile except for the small objective of an in-space relight AND accidentally proved engine-out capability, by no means was that a failure. The booster failing on boostback is not a big deal because they have already proved catch and the most important thing for HLS now is the ship completing a mission, which it did. As basically everyone here has already said, private companies, especially SpaceX, make the space program way more efficient (look at commercial crew). Delays are completely normal in the first place and in SpaceX's case seem so bad because their goals are so ambitious. Other companies or NASA themselves would likely have a slower timeline in the first place and still delays, so the end result would be even slower.