I know one guy who is obsessed with Star Wars—he had excuses for all the Disney Star Wars films, and he loves the prequels, but Boba Fett was too much for him. He says it's rubbish. I know that's just one little anecdote, but I don't think time is going to look too kindly on The Book (why is it called this) of Boba Fett.
I genuinely think it's abysmal. All the creative decisions on it are half-baked at best. It became a bit of a hate watch for me. It's telling that, imo, The Mandalorian became bad for me the exact moment Boba Fett showed up in that too.