The Mandalorian TV show was born from canceling the Boba Fett movie that was scraped when "SOLO" bombed in the box office. Boba was always going to show up in this, it was just a matter of when lol.
What's this I keep hearing about Jango and Boba not being real Mandalorians?
Lucas changing his mind in 2009.
Lucas wanted Jango to be an outlaw that obtained the Mando armor accidentally or through unnatural means. CloneWars/Filoni had to ride with it, one of the Mandalorian politicians denied Jango when Obi-Wan brought it up.
but Jango is clearly adhering to Mandalorian lore in AOTC by asking the Kaminoians for an unaltered clone to raise (i.e - a foundling). Lucas is GOAT but he should've left that shyt alone.
Jango was clearly top dog in the Mando world at the time