lower emissions by up to 70% in some places and even up to 95% in other
These figures imply destoying practically the entire agri-food industry.
Farm waste can be used to extract methane and turn it into manure, both of which are scarce today. If there really was a problem of pollution produced by agri-food farms, I understand that the challenge would be managing to treat the waste. As for the use of water on farms, I think that Israel has managed to do wonders in a semi-desert terrain. Therein lies the challenge. If, on the other hand, what you do is kill all productive activity so that it is not polluting, what you will achieve will be to make the goods that have stopped being produced more expensive or even cause shortages, don't talk about direct and indirect jobs.
A few decades ago, when it was not a taboo subject, there was talk of the tons of daily garbage generated by cities of humans (not animals). And the population does not stop growing due to massive immigration, because the European population was and is decreasing due to the low birth rate.
As the salaries of politicians are paid by the working people, if the productive system is destroyed, I hope they will act accordingly, and lower their salary in the same proportion.