In principle, these type of weapons are immoral even in war. We’re talking about things like mustard gas, chlorine gas, sarin gas. Nerve agents that are incredibly cruel and painful. They painfully, sometimes slowly, kill or incapacitate indiscriminately.
I think in practice warfare and weaponry have changed enough that the U.S. military feels it can wage war more effectively without these type of weapons.
There are no cake days, this isn’t Reddit. Don’t try to make it Reddit. Let it be it’s own thing.