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".
The other half is considered not canon because Disney wanted to shit its pants before making their empty sequel movies.