The unwritten experience you mention is primarily on the part of technicians. The F1 engines were handcrafted more than manufactured, by welders and machinists who used tricks that are simply not relevant today and haven't been practiced for decades.
Also, the American industrial base has simply moved on. Example: core memory, used in the Apollo flight computers, was a manufactured item in the 1950s and 1960s. It is effectively nonexistent today.
Building a Saturn-V today would simply be foolish. Building something functionally equivalent would probably be less expensive and time consuming, absent the DEI crowd.
Another aspect of the overall progressive decline in the basic character of America, with its spiritual, moral and familial declension, from my generation (and me) onward. Imagine America's Founders being from modern generations.
Related: https://americanmind.org/salvo/why-johnny-cant-build/