That doesn’t imply we aren’t killing the world, though. Agriculture in rich countries often needs fertilizer to get the higher yields it gets, newer forests aren’t as diverse and often never will be as the ones that were torn down, etc.
Forestation may be going up but what about fragmentation of wild land? It seems like because of cars, people can and do build houses all over, scattered about. This causes habitats to be broken up by busy roads, which kills animals, messes up migration patterns, and more. A lot of those people will kill or drive away all the animals surrounding their house. They spray for insects, trap all the animals, block their food sources, etc. Sure, they have trees since they are not using the land for agriculture, but I'm not certain that it is ultimately better for animals.
Also, forestation is going up in many rich countries (https://data.worldbank.org/indicator/AG.LND.FRST.ZS?end=2016...)
That doesn’t imply we aren’t killing the world, though. Agriculture in rich countries often needs fertilizer to get the higher yields it gets, newer forests aren’t as diverse and often never will be as the ones that were torn down, etc.