I have problems with people who abstained. The hard thing is, how do you change voter behavior?
I have never respected this circular logic. You could use this argument to make any position a "bad one" as long as biases, foolishness or gullibility on the part of the listener override any convincing points. At some point, it is possible for recipients of a message to be bad listeners, and for voters to be irresponsible in their naivety towards a candidate.