That's how I look at him. If you're someone who's only real exposure to Star Wars has been the movies, then there's nothing to support the notion that he's a badass. His old man and/or the guy he was cloned from, Django Fett, sure seeing as how he took on Obi Wan Kenobi in Attack of the Clones and ultimately came out on the winning end of things. Boba Fett's was always just shown standing around, usually holding a gun in his hand, and the one time he's shown to even try to fight, he winds up getting eaten by that...what'sit in the desert in Return of the Jedi.
So yeah, completely uninterested just as I was for Rogue One. Like Rogue One, it'll answer a few questions that die hard fans have talked about for decades and give them some closure, but that's about it.