True, but they're doing it on a far lower budget than the Space Shuttle.

A single RS-9 engine -- one of five used in the SLS -- costs more than an entire Falcon 9 launch with payload, taxes, and profit!

Starship is similarly frugal. Its construction is simpler, it is made of cheaper materials, it uses a cheaper fuel, etc, etc...

“Any idiot can build a bridge that stands, but it takes an engineer to build a bridge that barely stands.”