Agreed, Riyadh is hell on earth nothing more than a nest of nasty Wahabis.
Jeddah, however, is totally different and really quite a nice place to be. The people are completely different, they’re open minded, moderate and really nice and have a work ethic not seen anywhere else in the Gulf States. There are decent tourist attractions all along the west coast and the mountain areas. If they hub out of OEJN, I can see it working well. The converse will apply if they choose OERK.