Isn't friendly fire one of the main selling points of the game? The satire of negligence and disregard for the lives of their forces from higher ups is/should be one of the themes of the game, imo
That's why I was so surprised when I got kicked last night after a single FF incident 25+ minutes into a mission
I was finishing calling in something that ended with ➡️, which happens to also be the grenade button, which is what I unintentionally threw at the dude's feet. He dies and I go back to orbit like that lol