Instead of shouting my usual SILENCE, HERETIC - which is only ever meant as a joke, btw - I'll actually address this.
Because in a lot of ways, its right. The people who say this are often people who have never dipped one toe into the comics or the Legends books. [I'm not saying you, just speaking in general here] This is alllll over FB, this sentiment. Guess what? Until I did, I kind of didn't get the hype, either. I never HATED Boba, but really care that much about him? No.
When I began to read is when I started caring about him and admiring him.
Of course, the people disrespecting Boba are often the same crew who fawn over Jarjar and think he is some kinda Sith. Yeah, sure. I have left a bunch of groups over this type troll-y b.s.
Mando version Neu Boba is a lot easier to like than Legends Boba, tbh. You could even say that Legends Boba had.... issues. He was a serious schizoid, at the very least. A guy so paranoid about a slave-outfit-wearing Leia being sent to his room by Jabba, that he has to sleep with his eyes open lest she try something....? Leia? Is gonna take out Boba Fett? Doubting it. Yes. Issues.
What would go down with Neu Boba? He and Fennec would eye bikini-wearing Leia speculatively and then exchange a meaningful glance between them. LOL, sorry. But you know its true.