I’m not certain why the carriers stopped using Suez. We were on decent terms with Egypt we even had Liberty there in 79 I think it was. The riff with Isreal was short lived. Intrepid was the last carrier before the Six Day War to go through. I haven’t looked to see if a Forestall class and later went through it earlier or not. If they could the Kitty Hawks should have been able to also. It could have been a Cold War issue or construction for super tankers accommodations had began about that time.
It was determined to be vulnerable to land born attack.