Dubs believe rituals are wrong just because they are rituals; rituals are wrong in themselves; there is something demonic about rituals.
I believe rituals are a harmless human tradition. As long as they are not hurting anybody, I see nothing wrong with them. If they meet their emotional/social/psychological needs by doing a ceremony of some kind, good for them.
The RC church, being as old as it is, developed a lot of symbols and rituals for an additional reason: communication. There was no CNN. There were no microphones, hearing aids, or eyeglasses. There was widespread illiteracy. A symbol, such as a robe or smoke, is visible from afar and communicates quickly to people who otherwise could not hear or see a speaker from a distance.