Why Can't I Use Boba Fett's Flamethrower? What's Am I Missing?

Yeah, compared to SWBF15's flamethrower, the one now seems lackluster. But considering Boba was the worst / most difficult hero in that game, and now he is not considered really good, especially in HvV, I think getting rid of the flamerhrower as it was and making it as it is now maybe was a good choice. His melee is the strongest melee in the game, taking 100 damage. Chewie and Palpatine have 90 damage melees, and the rest is 65. Not sure about troopers though, but the specialist can have the best melee if he equips a certain star card