Is it pronounced "gist" or "jist"? "Gem" or "jem"? "Giraffe" or "jiraffe"?
You're implying that there should be a logical correspondence between how English words sound and how they're spelled. I'm not convinced that is true.
https://books.google.com/ngrams/graph?content=gist%2Cjist&ye... makes me wonder just what happened around 1840. I suspect https://en.wikisource.org/wiki/Why_the_Little_Frenchman_Wear... (uses jist regularly as a misspelling of just) may have something to do with it.
Both patterns exist in the language.
These are both words pronounced really differently, though. Give is a hard 'g' short 'i', jive is a 'j' and a long 'i'.
I'd like to add 'Gaol' or 'Jail'? Debra vs Zebra (These are pronounced differently in the US).
Yes that is my point.