Nearly every single word in English that starts with a g followed by a soft ih/eh vowel is pronounced as a soft g, just a few:

That is patently not true and blatant cherry picking, e.g. already contradicted by the lexically matching word “gift” (and there are “giggle”, “gild”, “girl”, “git”, “give”, “gizmo”, etc.). See Wikipedia, which referenced linguists studying this:

An analysis of 269 words by linguist Michael Dow found near-tied results on whether a hard or soft g was more appropriate based on other English words; the results varied somewhat depending on what parameters were used.[11] Of the 105 words that contained gi somewhere in the word, 68 used the soft g while only 37 employed its counterpart. However, the hard g words were found to be significantly more common in everyday English; […]

https://en.wikipedia.org/wiki/Pronunciation_of_GIF#Cause

Michael Dow is an associate professor in linguistics with specialization in phonology, by the way.

and if you’re confused why others pronounce it with a soft G, they would seem to be simply more familiar with the English language 🤷‍♂️

Well, clearly you are already not as “familiar with the English language” as you might think.