You are shooting at an angel for the devil.
First, the market share for hard liquors of Keroche is negligible- at most 2%. Kenyans drink unsafe chang'aa, busaa and all sort of counterfeit from kariobangi. These days populous estates in towns across Kenya have these crazy guys packing ethanol and sometimes methanol into the recycled bottles of fast moving kill me quicks. I suspect the business of even new bottles and branded stickers is booming.
Secondly alcoholism has been with Kikuyus for decades before Keroche. By the time Kenyatta was dying men were messed by Muratina and chang'aa all over. They were saved by Moi, though distorted Kikuyu supremacist claim Moi brought the cheap liqours.
@Gout, on this one I side with @Plato.
I won't go into an insha but I highlight what you need to relook into as I suspect
1. Your movement around Kenya has been limited, probably more limited than that of @Pundit. I have issues with Pundit's punditry but he has always convinced me he has traveled the length of most counties in Kenya. He will mention small markets like
Chwele, which ordinarily other Kenyans have never heard of...
2. Most of your claims are informed by the present. For those of us who were of age when Moi took over after the death of Jomo, we are more informed as to why the present is a consequence of the past. It is
not a "distorted claim" that Moi "brought cheap liquor to [Centro]".
It is a fact. Truth is that Moi had policy to control Mt. Kenya by letting them keep busy/drown in liquor. It was an economic weapon to fight the one tribe he considered opposition to him and that had money to mount a challenge to his govt and even overthrow him.
This is the truth I witnessed I the period 1978 -1982: When Moi took over he went preaching against to vices among Kenyans..
1). Magendo (This was rampant at it made a market on the Kenyan-Uganda border infamous. Jomo's wife was said to be a major beneficiary of the illicit trade. Ask me what Magendo of that time was I will tell you. It goes by another name today.
2) The state of local brew in every market in Kenya. Today to find illicit brew, what you are calling "chang'aa, busaa, Muratina", you have to go to hidden
private dens. Before 1978, these were not hidden! It was a trade, selling side by side at the market as the mama mboga selling sukuma wiki. It was sad to see drunks as early as 10am in the market. So immediately on taking over as President, Moi closed clubs at the market selling buses and chang'aa. This was strictly enforced all over the republic,
except strangely in Mt. Kenya Region. Enterprising kyuks
without a soul like Keroche, cashed in, setting up factories to make cheap liquor and con young kyuk men that it was a class above Muratina. Moi looked the other way. A perpetual drink kyuk was less likely to organize himself into a political force. That is a fact. To this day, it is only in Nyeri that men get beaten by women for being too "weak" to sire children with them. It is only in Kiambu that chiefs are still actively engaged in raising muratina dens. The rest of Kenya weaned off the brew and only drink it at cultural functions in rather moderate quantities.
So ask yourself why alcohol is more of a problem in Central than the rest of Kenya. Well I just gave an answer.... that reinforces what you have been told by others yet you refuse to believe.