No mention of fertilizer usage, which is created using fossil fuels. Of course you need less land if you take the biomass from a million+ years ago and use it a

No mention of fertilizer usage, which is created using fossil fuels. Of course you need less land if you take the biomass from a million+ years ago and use it as feedstock for you crops today to produce more than the soil ever could naturally. And even that isn't enough looking at the decline in topsoil thickness which takes 75+ years to build up to even make high yields possible.