I didn’t ask for the world to have 8 billion people in it, and I sure as hell won’t be stopping enjoying fairly basic luxuries like consuming protein just because others tell me to do so.
If we need to make such drastic changes to human consumption, have people considered if we have a overpopulation problem?
The demographic collapse was a forgine conclusion in the 80s. There is no global overpopulation problem over the next century. There will be food shortages due to a lack of labor and dessicated farmland. It will be rough for the average human.