That's not how language evolves. I'm sure you don't pronounce every French word that was assimilated into English with a French accent / pronunciation.
6 karma · joined October 16, 2020
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.