RBF I think a part of the problem of this show is as you mentioned - they are unraveling the mystery of Boba Fett which is what is the main problem with long time fans - specially since they are just ignoring a lot, if not most, of what made Boba such a draw to fans in the past.
One of the giant main problems with Star Wars, at least in my opinion, is explaining things or showing things that don't need showing or explaining in the first place. This is what the prequels did horribly for pretty much every single character in the original trilogy and the majority of them either made the character worse or made the character way more confusing. For example....
C3PO: not a protocol droid in use by the Rebel Alliance, happens to be built by Darth Vader
R2D2: super powered astromech that can fly and do a lot of other amazing things - literally only ever rolls around in the OT and occasionally zaps things
Boba Fett: literally just a clone of Jango Fett, instead of simply being his biological son who not only lost his mother but also his father - right in front of him, which makes things way more confusing/complicated, specially if wanting to use that character again on screen and making him a clone literally erases the mystique of the menacing "man behind the armor" in literally the worst way possible as we've now already seen that exact same character die
Anakin: annoying young adult with not enough corruption time on screen, IMO, also his backstory doesn't really line up with Obi-Wan's story, even a little bit, in the OT nor does the death of Padme with the children
Obi-Wan: pretty cool backstory, if I'm being honest, but timeline wise (age) fails miserably to line up with the OT timeline.
Also - going along with the backstory for things that don't need a backstory..... don't even get me started on the Solo movie lol. It was a super entertaining movie to watch for sure but I think it failed miserably to be a Han Solo origin story. If the main character was literally anyone else, I think it would have been fantastic, perhaps make it even a Dash Rendar movie with a young Harrison Ford CGI cameo. However, as a Han Solo movie - I just think it failed to do any justice to the character of Han Solo.