By the same logic someone could claim that 1985 Excel was in fact based on the preceding 20 years of mainframe and minicomputer software and the very first spreadsheet-esque programs.

And that those were in turn based on the ideas of Von Neuman & co. from 1945 of tabulating numbers efficiently, and so on and so forth in roughly equivalent leaps all the way back to the first abacus.

It's so reductive of a perspective that it's self-defeating, since no human being, including you, could ever actually comprehend the entirety of technological development, or even just the post-1945 developments.