They are complaining because a spaceship named Slave-1 (which is extremely famous and important as we all know) has been renamed for a LEGO kit as "Boba Fett spaceship".
Which is obviously SJW censorship and not simply a maerketing play because the name Boba Fett is more famous than "random ship-number".
You're right, they didn't. I know it from playing the Lego Star wars games I think, or maybe just being a boba fanboy as a kid so I had to know everything about him.
I think I learned it originally from lego star wars