Why Does The Armorer Know So Much About Jedi In The Book Of Boba Fett?
Contains spoilers for "The Book of Boba Fett" Chapter 5
"The Book of Boba Fett" Chapter 5 takes the time to explore the history of Mandalore and its people a little further as Din Djarin (Pedro Pascal) returns to our screens with the mythical Darksaber in his possession. It's a surprising change of pace for the series since it doesn't actually feature Boba Fett (Temuera Morrison) at all.
But Chapter 5 is a welcome return for everyone's favorite silver gunslinger, as it picks up with the bounty hunter after the end of "The Mandalorian" Season 2. Although, he's clearly missing his sidekick slash adopted child, Grogu, who's off learning the ways of the Force with Luke Skywalker (Mark Hamill). Now that he's completed his mission of reuniting Grogu with his own kind, Djarin is a bit of a lost soul — and goes in search of any surviving Mandalorians from the Nevarro Coven.
Luckily, he's not alone in the universe, as he finds the golden helmet-wearing Armorer (Emily Swallow) and the blue-suited Paz Viszla (Tait Fletcher) on a ring-station. But this only complicates Djarin's life further as they discuss the Darksaber and its mythical place in the history of Mandalore. The Armorer recounts the tale of Tarre Viszla, the Darksaber's creator, also revealing that it can only be taken by defeating its current owner in a duel.
But why does the Armorer know so much about Jedi in the first place?
The Armorer's role is to preserve Mandalorian culture
"The Book of Boba Fett" touches on the "Great Purge" of Mandalore, where the Galactic Empire bombarded the planet and forced its inhabitants into hiding. Because there are so few Mandalorians left in the galaxy, the Armorer's role is to keep the planet's culture alive for its survivors. Just look at the way she constantly reminds the other Beskar-bounty hunters on Nevarro that they have to follow "the Way of the Mandalore" — an orthodox belief system in which its followers never remove their helmets in front of other living beings.
This also means that all the old legends would've been passed down through generations, including that of Mandalore the Great's war with the Jedi, and Tarre Viszla. These stories are why the Armorer knows so much about the Jedi: Tarre Viszla was the first Mandalorian to join the Jedi Order, and after he died his people snuck into the temple to retrieve his iconic blade (via Wookiepedia). From there, the blade became a symbol of power across Mandalore, as whoever rightfully wields it can lead the Mandalorians to glory.
The Armorer's speech to Din Djarin about "fighting against the blade" is similar to the saber lesson Kanan Jarrus (Freddie Prinze Jr.) gives to Sabine Wren (Tiya Sircar) in "Star Wars Rebels" (via Wookieepedia). This isn't to say Sabine is secretly the Armorer, but it's not impossible that they've crossed paths at some point, with Sabine passing on the lessons of her Darksaber training.