It's also worth pointing out that the new prototypes, like SN5 that flew today, are made with significantly thinner steel over what "Star Hopper" was made with last year. They have spent a lot of effort perfecting their manufacturing technique so they can make these things as light as possible and still achieve the safety margins that they need to support manned flight. That's why they need the 22 ton weight on the top for this flight, because they can't throttle a single Raptor engine low enough to hover these new designs.