Right. It's like building a large model rocket and saying that you've cracked rocketry for a fraction of the cost that was required in the 1940's and 1950's.
Well yes, yes you did, because all you had to do was follow the existing instructions, guidelines, and use easily available materials. You didn't go down any dead ends, didn't have to work your way from propellants like high test peroxide, dangerous hypergolics, and eventually develop solid rocket boosters.
It's like making the generic of a drug someone else developed.