DP Ruto is, as far as I can tell, a very determined and hard-working fellow. He also doesn't seem to have a lot of time for the bottle and p*ssy, which, in his position and in Kenya, means that he has plenty of time for such things. His biggest mistake is that he went astray (in 1992) and decided to devote himself to land-grabbing and electoral violence. Perhaps he thinks the riches have justified that. (Kaparo, using his legal powers, has just called on people to repent. You there, DP?)
There are obvious "conflict of interests" here": The "student" arriving for his "progress meeting" is met by a supplicating head-of-the-university---mheshimiwa, mheshimiwa, mheshimiwa!---whose departure the "student" can easily arrange, professors looking for lucrative "consulting" contracts, ....
But I give the man points for actually (apparently) working at it, instead of---step forward, "Prof. Dr." Ngunyi and "Prophet Dr." Kanyari---just waking up one morning and declaring that now this is this, and I am that and the other! And I'm pretty sure the DP knows a thing or two about " the impact of human activities on riparian reserves". A catalogue of some his activities should be enough to produce Dr. Ruto.