I think the EU is a bit bizarro with respect to Boba Fett. Having a guy somehow survive being eaten alive (sure....digested over 1000 years but still!).
Someone just thought he was kewl and made a story about him.
I think I'll make a story about how Uncle Owen was not actually killed at the farm. The bodies there are of burned stormtroopers and Uncle Owen and Aunt Beru become uber-mercenaries that help find Jedi and at one point between the two of them took out 22 dark Jedi that attacked them, AND saved Luke Skywalker from being attacked, while playing Deus Ex Machina to Han Solo when he was boarded by an Imperial Cruiser. THey came in, took out the crew, set the Cruiser into a crash course with the initial construction of the third death star, and jumped from the ship into the Millenium Falcon getting on just before it entered Hyperspace.
Uncle Owen and Aunt Beru are responsible for 1000 years of peace and order, as well as happiness in the Republic. It has truly become Utopia. Oh, that blast when Boba meets Solo? That's Beru showing off her leet sniper skills saving Han's life yet again!