Apollo era hardware is much less antiquated than it should be. Yes, it’s been 50 years since it was first designed, but NASA has only had one new spaceship in that time, the Space Shuttle, designed for LEO and now retired. The ships the Soviets use to resupply the ISS are essentially even older. Only Space-X is doing any new designs, and that’s only recently. From what I’ve read, almost everyone seriously looking into going to the Moon or beyond is digging up Apollo hardware. So while it may be 50 years old, it’s not that antiquated. We haven’t put much effort into surpassing it.