Don't be silly. Nothing I have said rules out an area of the Gulf that is significantly deeper than the rest. And there is such an area plainly marked on the charts - the Aragonese Deep.
What I have said - and I guess it needs repeating - is that most of the Gulf of Aqaba is less than 1000m deep. To cross at Nuweiba would require crossing the contour marked as 850m depth. All this is clearly marked on the charts provided by Lysimachus.