That's not an argument. You're just being insulting and belligerent. Acronyms are not pronounced based on their constituent words. You need to let that go, because it makes you the asshole.

There are two factors that determine how words are pronounced in English, and this is precisely true of every fucking word in the language. There's the original pronunciation, and then there's common usage. If English borrows a word from another language, like "bruschetta," there's the original pronunciation "brooskett" and then there's the American pronunciation "brooshetta" because fuck all that. Say either one and you'll be understood, and you'll have spoken English. Neither is "wrong" because people know you want some expensive salsa on tiny toast.

It's the same with gif. There was the original pronunciation, and then basically nobody said the word out loud for 20 years because only nerds cared about the extension format wars. Then the internet brought memes to your grandmother, and suddenly everyone was sharing dancing_baby.gif and hardly anyone knew how to say it. People actively avoided saying the word because they didn't want to sound stupid.

Then one day, some extra stupid people decided that they had enough of that bullshit, and they would not be made to feel stupid for not knowing how to pronounce a word. They shouldn't have felt stupid, because again, English doesn't work that way, but at that time the nerds were strutting around like they had invented confidence. Technical pronunciations were like a geek shibboleth that signaled you had in fact RTFM, and because pendulums swing, techies were bullying people online about it.

But I did call them stupid people, because they were stupid. Not because they didn't know how to pronounce a word, but because they chose obstinate ignorance over truth. There was a common, original pronunciation for gif, and there's absolutely nothing wrong with it. The fact that graphics is pronounced with a hard g doesn't matter in the slightest, because that's not a rule that ever existed before someone got mad about gifs. The only thing worse than a shitbag who bullies you for being wrong about something is a shitbag who bullies you for being right about something.

Talk how you like. This is, for now, a free world. English evolves, and life is too short to spend your days arguing with an amateur linguist online, because this guy has two thumbs and will absolutely continue this conversation until you regret engaging in it. Be free. Your hard on for the hard g is a stone you carry around for no one, and all you have to do is set it down.