Nitish and his DNA: "Chaubeyji chhabbeji banne gaye aur dubbeyji banke aaye!"?

In the book "Straight and Crooked Thinking" authored by R. Thouless and published in 1958, the author comprehensively discusses how arguments are carried forward to win. One of the false tactics mentioned by him is "Taking the opponent to the extreme of his position, condemn it and thereby condemn the whole argument". For instance if your opponent says "Eating banana is good for health.", counter him with the false argument saying "Yes, yes, eat one in the morning, one more for breakfast, another for lunch and one at tea and one more at dinner and the last at bed time and then see how many times you keep running to the loo at night." Your statement is not false and seems to be winning the argument, till one applies his mind to it. Nitish is doing the same thing in this argument. He is picking up the word DNA and takes its literal meaning, instead of popular implied meaning. If you apply the literal meaning, of course, PM Modi would have been wrong and Nitish will sound to quite right in his false accusation. But any literate person will be able to see through it. He and his campaign managers might gloat over the letter if they want to believe in their own falsehood, but people are not taken by it. Rather they will only have a good laugh at his foolish attempt to put one over them. Do you remember the Hindi proverb: "Chaubeyji chhabbeji banne gaye aur dubbeyji banke aaye!"?