In an attempt to fix the bloated Gunsmith system of recent Call of Duty games, Modern Warfare 4 is introducing a new feature, Gunny. It's a little widget in the bottom right of the loadout screen that you can use to create loadouts for you. For example, it'll say "Hello, I can help you build a weapon when you have more attachments unlocked. Keep levelling your weapon," if you've got a brand-new weapon.
Naturally sceptical of a weird widget that communicates with you, Infinity Ward has been accused of using AI for this new system. In a post which instigated a lot of the uproar, retired Call of Duty leaker TheGhostofHope said: "They got an AI chat bot in the game now to help mfs with their loadouts as if it’s not the same shit used every year."