I’m a retired Field Artillery officer, that statement is verifiably false. Both the M777 and HIMARS are field tested and have combat history.
It makes even less sense for the HIMARS. The firing element is contained in the ammo pod, which holds 6 rockets. Fire 6 rounds then discard the pod, pick up a new one and fire that one. The launcher truck and fire control systems do not see huge wear and tear from firing. The pod gets by far most of the damage.
That’s what I thought. Someone else kept posting to me how unreliable the artillery was. That didn’t seem to make sense hence my reference to 25 hour shelling of America by the British in 1814.
That just didn’t make sense that artillery today can’t do what it could 200 years ago.
What you say is more reasonable.