"It's simple logic, really."
Actually, it's a 'see no evil, hear no evil, speak no evil'. Comparing Earth's real world history with fictional galaxy's (which is...significantly larger) future history is a straw-man.
Even within the confines of this imperfect comparison, life would be pretty much the same for an amazonian tribe.
Star trek contains enough developments just as far fetched - and few of them have the credentials of a time traveler that is in the know.