I lived in Saudi Arabia for more than a year. There are lots of misconceptions that Western Somalis have. They are much less racist than Somalis, that's for sure.
In Saudi schools they teach formal standard and classical Arabic but the vast majority are not interested in it at all. It's like us studying Shakespearean English. So it's dying, even the Wahhabi clerics have succumbed to the local dialect.
One of the most surprising thing I've seen is the amount of Hindi loan words in Saudi Arabic, perhaps due to the huge Indian subcontinent population in Saudi. In another half century, the dialect will sound much more curryish.