Totally agree that it will be a hardship. However the following things are all true: (a) There is a chance that "carbon taxes" will lead to just as much practical hardship on the poor, (b) There is no guarantee that these carbon taxes will work, (c) There is no guarantee that the poles will even melt.
The layers of uncertainty are piled so high, that a rational response is "wait and see". I do recognize however this approach is negative to grant funding, so these 'scientist' lapse into apocalyptic fire-and-brimstone talk to rouse the faithful.