The problem is that there is even MORE reason to move the Ba'ku than there was in Journey's End. First of all, they are not native to the planet and its controlled by the Federation. The Federation has the legal right to remove them. Second, there's a full scale war going on against the Dominion and many people have already died. Hundreds of billions of lives are at stake, but Picard's going to fight for 600 people who want to live forever, I don't buy that he would do that. Many more lives were at stake here than in Journey's End. Spock said it best "the needs of the many, outweigh the needs of the few, or the one." I also don't see the ENTIRE crew supporting him.