Their argument is that word pronunciations can mutate over time. Knife used to be pronounced k'nife. This slowly faded over time and is now completely eliminat

Their argument is that word pronunciations can mutate over time. Knife used to be pronounced k'nife. This slowly faded over time and is now completely eliminated. By analog, jif being the original pronunciation is not important because the majority of people have decided to go with a hard G. In other words, the "correct" spelling or pronunciation of words is democratic.