but this does not mean "bitcoin" was a 60 year project
just like a car was not a 6000 year project started by the somarians making the first wheel
tesla motors electric car was not a project started in 4000BC
Nobody's saying that Bitcoin was created any earlier than 2009, it's quite clearly labelled as "pre-history". This means prior to history, not Bitcoin's actual or direct history.
So it's not like saying the motor car was a project with a 6000 year history, because the first wheel was invested then. But it would be true that the pre-history to the motor car includes when the first wheel was invented. Because without the wheel being invented creating a car would more or less be impossible (at least at present). So yes, Bitcoin's pre-history can include anything relevant to what made Bitcoin possible.
Anything from maths, tcp ip, sha256, cryptography, distributed networks, digital currency. Basically anything related to it. Unless you think Bitcoin was created without any consideration of any developments prior to it? For example, Satoshi created Bitcoin without any consideration of the development of mathematics or cryptography? Obviously this is complete nonsense, Bitcoin's creation depended on various other factors.