@tomtom, good questions. Now such questions and answers are what a proper feasibility study shows. Now that we have not publicly seen any feasibility study, we are left to imagine and debate, such as the recent Dvid Ndii's article but the best situation is for Govt to pay Kenyan consultants for a factual feasibility study that has incorporated all the above issues.
For Govt to have asked the Chinese contractors to carry out a feasibility, this is ridiculous since they can only do a feasibility that is skewed to their advantage.
As Iron Sharpens Iron, So one Man Sharpens Another.