Maybe it's the fact that it has violated forty years of tradition by showing us Boba Fett without his helmet?
From the article:
Maybe it’s because The Book of Boba Fett doesn’t fully understand who it is that it’s being made for. Or maybe it does, but it has forgotten its roots. See, Boba Fett was my generation’s most iconic man of mystery. We had no idea who that was beneath the helmet. And we liked it that way. Heck, for all we knew that could have been a woman in the armor posing as a man (no offense meant to the memory of Jeremy Bulloch). The only thing that mattered is that Boba Fett was the most infamous of the bounty hunters who answered Darth Vader’s call, and he succeeded in his mission to capture Han Solo. Come to think of it, Fett was the only character in The Empire Strikes Back who accomplished his purpose.
