That's the same thing. The paper is arguing against the need to increase production vs redistribution of what is currently produced.
That isnt a 30% reduction, it's only needing to make 30% of what we already are doing.
Where does that 30% come from? They are explicitly saying that their analysis isn't about increasing production of anything. Redistribution means taking away from the rich developed population to give to the poor. They said take 30% and redistribute it. If you are on Lemmy, that includes you.