39 years ago today, I led a 3-ship Harrier GR3 attack against AAA that was being used in direct fire against the 2 Para attack on Goose Green.
The attack using CBU's and 2" rockets was successful and put the guns out of action. I am told that it helped to de-moralise the Argentinians, and bolstered the morale of the attacking Paras. So it helped.
We were held at cockpit readiness on the deck of HERMES at first light the next day to go to do a "firepower demo" in the same area if the Argentinians didn't surrender - they did, so I went elsewhere.
Given the importance of that first major battle after the landings, the successful surrender at Goose Green set the scene for the next few weeks and the final surrender.