Falcon 9 landings are broadcast live, tracked by independent observers and amateur astronomers, photographed by news agencies on the ground, and — most decisively — the same physical boosters are inspected, re-flown and re-landed dozens of times. By 2026 SpaceX had recorded over 600 successful booster landings; individual boosters have flown 30+ times each. NASA, the US Space Force and commercial satellite operators integrate real, multi-hundred-million-dollar payloads onto these vehicles. You cannot fake a rocket that lands, gets refurbished, and visibly launches again next month with a new customer's satellite aboard. Reusability is one of the most independently verified achievements in modern aerospace.