Also none of this is new knowledge. This was taught in my high school 30 years ago.

Did you go to high school in the country that made this law? In addition, how many farmers in that country get high school education?

From what I read getting grades 1-8 is common in Kenya, but the high school years of education drop off significantly with only around 40% of the population getting that education, and making an educated guess that would target city people more than those that would be farmers.

https://en.wikipedia.org/wiki/Education_in_Kenya