The argument here is that the money spent to train a new officer and have him learn on the job would be wasted on her/him if they were to smart as they would get bored quickly and quit.
Not saying it is the best argument but that is what I have read as the reason for rejecting high IQ applicants.
And the cost of not having smart officers is not taken off the police's budget ;)
And then there is the RCMP a rather bigoted saying you hear is what gets you in is "tits, tan or a turban".
And you are repeating this 'rather bigoted saying' here why?