No service does that. NONE. Friendly fire has been with us as long as there has been fire, and NO SERVICE TAKES IT LIGHTLY. Not in the USA, at least.
Targeting pods and improved communication make fratricide less likely. It will never eliminate it. Targeting pods are a huge advance over dropping low with 3 seconds down the chute. It is even harder to do a level delivery accurately on the right target at 100’.
My SIL & oldest daughter were in the Marines. My son is in the Army. I was USAF, with 2 years on an Army fort and I deployed to Afghanistan in support of an Army project. I also did a 3 year tour attached to a US Navy squadron. I take perverted pleasure in having never had a joint tour, but having decorations from the Army & Navy to go with USAF ones.
Joking with each other around Thanksgiving is fine. Pretending “one service starts killing the other through bad doctrine, bad training , or just indifference” is horseshit.
Your attitude explains part of the problem. Air Force doctrine has always emphasized strategic employment of air power and made close air support of ground forces a bottom priority. Imagine how much better Omaha Beach would have gone with dedicated CAS.
My resentment comes from seeing fellow Marines die because of negligence, followed up by arrogance. The Air Force never apologizes and in the case of the deaths of those Brit soldiers, even refused to have the pilots meet with the soldier’s parents when they were asked to.
An Air Force plane bombed my battery in Vietnam after I had already been evaced home. They used cluster munitions but luckily only 6 men were wounded, nobody was killed that time. The big insult was that the Air Force sent an investigation team to our battery - not to apologize - but to see why the bombs were so ineffective.
My Dad and both Uncles were Air Force. That doesn’t make things better for me. I’ll be impressed when I see that culture changed.