Yeah.

We still know where the Trojan Horse is from, despite literally thousands of years of culture, stories, translations and a complete lack of printing technology. I also know what the context is for a burning bush.

With our far superior technology, literally global popularity of Star Wars and the fact that we haven't lost stories of even much smaller scale from much earlier on, how would we ever lose the context of what a lightsaber is?

It would require pretty much the complete destruction of all media and the extinction of most people and if even one of the survivors was even slightly predisposed being a writer...