I acknowledge that you fulfilled my request but personally remain unconvinced using those examples. Tom is generally a nickname for Thomas and borrows pronunciation from that.
However I did remember the words kin and kind but there's also tin and tint. So I'm just going to declare English overall as highly inconsistent and silly, will still pronounce gif with a hard g, but recognize that you have a different point of view. 🙂
Just because somebody who made a word wants to pronounce it a certain way doesn't mean that's others will pronounce it.
Heck, look at the at history of the word tomato. Came from the native Nahuatl word tomatl, which was changed to tomate for Spanish and then tomato for English. The British are closer to both the native Nahuatl and Spanish pronunciations of the word but few Americans will say it as "tuh-maa-tow".
Do you have any examples of words changed by adding a consonant? Additional vowels in words, such as your examples, usually change how a word is pronounced
Also, your attack in the second paragraph is unneeded and contributes nothing to the debate. If an argument cannot be based on logic alone, I ask that you do not make it.
Counterpoint: Gift
Literally has gif in it and is pronounced with a hard 'g'.