What about everyone else who were unwillingly ripped from their lives in the EF and sent to a foreign land? Snow and Charming had no idea whether they could get back to the EF from Storybrooke. They are taking it on faith that they would defeat Zelena and find a way back, and while they have the right to risk themselves (and perhaps, their supporters), they had no right to make that decison for others.
Given that Snow and Charming seem to be the only rulers left in the EF, they do kind of have the right to make those kind of sweeping decisions, and the fact is that most of the people who would’ve been transported back to Storybrooke had been there before, and, with the way the new Curse was initially cast (before Zelena swooped in and mucked with the formula), there would have been little to no consequences other than them simply being ‘displaced’ from the EF.