But there is now 7 billion people. And no, it's not just "People will have to move": +6 degrees in one century is a temperature change we haven't seen since humans appeared on Earth: https://www.xkcd.com/1732

So we need to come back to emissions of 1990 (when they balanced natural absorption), emit a even less for a while, but with 7 billion people, everyone has to emit much less than in 1990.

To preempt any question... I still eat meat and I don't see how I could do without.