We have no form of long term preservation of information any more.
Which keeps better, paper or a hard drive? Exposed to the elements, that is. A literal metal disc or a collection of paper fibers?
The sheer amount of copies of Star Wars in all it’s forms is mind-boggling, and again, literally global. We also have people and institutions dedicated to archiving significant things.
There are very few imaginable situations which would lead to humanity losing the concept of what a light saber is.
Like please, propose one.
This is unlike earlier cultures which stored information on physical media which continue to exist long after the culture that created it is gone.
You’re seriously suggesting cultures 3000 years ago preserved information better than we do? Seriously?