In the Twitter convo someone posted upthread there's a video from a very nice young Saudi man pointing out how unreasonable the guardianship system is. There are certainly other Saudi men who feel the same. The system is still misogynistic and harmful to women, no matter how many very nice men don't approve of it.
I do think things will change sooner or later, and that a lot of young people want the rules loosened up, and that the demographic slant towards youth may accelerate that process. The clergy will fight it every step of the way, though, and for every royal who wants change there's another who'll try his best to block it.