This flight route has been enabled during last October, which is when Israel and Jordan signed a new agreement allowing flight to overfly both countries on their way east. For now, this flight route is only enabled during nighttime, which may explain why some airlines are still flying over Sinai.
See (Hebrew): https://www.themarker.com/news/aviat...mium-1.9219400 and https://www.calcalist.co.il/local/ar...856190,00.html