The Baku were not a sympathetic species at all. Their level of self-entitlement is just staggering. They all but declare their immortality is more important than anyone else, including the Son'a. Exiling them is the equivalent of a capital sentence, and well the ones that were too far gone? Too bad. They just die. End of the movie. But Picard got laid, so who cares if the Federation drove the Son'a into the Dominion alliance, and if they didn't get new medical advances that surely would've helped in the war.