> What you're saying could easily blow up from 'how to code C' to 'reading the GCC / Clang compiler source code to figure out how a specific UB was implemented, which the program in this specific case falls into', which I'm sure nobody wants to spend their weekend doing

There will be many, many people that will gladly dig into the minutia and technical details of arcane hardware, especially when it means making progress towards filling in the historical record. This is already the case today, there is a working https://en.wikipedia.org/wiki/Colossus_computer reconstructed just because it was historically significant.