We may need to reconsider what is austerity also, is living without a pet austerity? is washing ourselves with a soap bar instead of a multitude of cosmetic products and stuff austerity? is eating local legumes/fruits austerity? is using a bike to commute or go shopping austerity? etc.. There are many environmental-friendly alternatives, I think it's every person's role to find those alternatives (politics are more interested to foster consumerism), this guy is quite inspirational https://www.youtube.com/watch?v=nX4kq4QfYRA