He would be. A lot of people have tried to box him in as the reason why "they made a mistake".
He only did a job - that of putting Jubilee messaging in a tune that people resonated with.
The reactions are normal with propaganda - disbelief (that we could have been so stupid to make a certain decision based on propaganda), anger, disgust (ni gutee!)...and of course people in normal Kenyan fashion must find something/one to blame for their own lack of reasoned decision-making....
Irony is that they all seem determined to make another poorly-reasoned decision ---sijui after that watalaumu nani but lazima tutatafuta bogeyman wa kulaumu kama Githae.