What you are putting forth is layman argument. Let me try to break the issue down for you. I will use an abstract example.
Suppose the law says that for every litre of drink manufactured with an alcoholic content of between 10 and 20%, I pay 20% as excise duty. If below 10%, the rate becomes 10%. Then the same law says that if I manufacture fortified drinks, then the tax rate becomes 40%.
Now I manufacture a drink called Ulevi extra with a 30% alcoholic content. It sells well, but I realise that some customers would love a lower content. I therefore dilute this drink with water to become 5% alcohol and call it Ulevi Lite. I price the drink well below Ulevi Extra.
Now KRA argues that Ulevi Lite is a fortified drink and should attract a duty at 40%. I argue that it is a diluted version of Ulevi Extra since it did not undergo a separate manufacturing process, and therefore should be taxed as Ulevi Extra. KRA disagree. I argue that if it is manufactured, then it should fall under the category of below 10% alcohol and therefore attract 10% duty. KRA refuse and we are set to meet in court.
Then I get a nomination to run on UDA ticket. KRA comes and closes my factory the next day.