Yes, we learn more on our impact to the environment and other beings life and adjust what is for us right thing to do. And with this vocabulary evolves to. Not that long ago the word vegan got added to difference from vegetarian. We added ovo/ lacto to vegetarian. Added pescatarian. And add to the definition of each. Evolution of mindset and with it language to articulate it. One day there might be a word for „just food vegan“ and for „vegan that is growing all there own food with least amount of bugs killed possible, and if only to feed birds“ And maybe even „Monday vegan“ or „not on Sundays but else vegan“ , and „vegan supportive“ who knows...