The Consequentialist trinity is typically regarded in this way: Bentham is crude, Mill's writings are full of howlers and inconsistencies, and Sidgwick was too smart to fully embrace Consequentialism. All of these great traditions in moral philosophy express strands of our moral consciousness and they should all be treated as research programs rather than as fully determinate views that can be leveled by a counterexample or by a clever argument.
Dale JamiesonSince for me moral demands necessarily flow from human psychology, I don't think we can be obliged to do something that we are not motivated in any way to do. In other words, I'm an "internalist" about morality.
Dale JamiesonMuch of the point of individual action is really to communicate with other people and with political leaders and to demonstrate to them that we are willing to live lives which are less dependent on fossil fuels and we'll show you that now by changing our individual life to some extent but we want you to take action, political leaders, so that we aren't living in a society in which we're dependent on poisoning the future in order to maintain present lifestyles.
Dale JamiesonI think that by the middle of this century people will still be eating meat (though less), and their meat will mostly be produced in factories through synthetic processes, cell cultures, and so on.
Dale Jamieson