Just to clarify -- 21st Century WB is NOT a requirment to be a Jambo Scoutmaster - "be Wood Badge Trained" is the qualification. Those who have NOT TAKEN Wood Badge (ever)and are Jambo SMs need to take Wood Badge.
To the gentleman who felt he was not heard until he wore the beads. Perhaps what changed was not your regalia - perhaps it was you. Confidence, Leadership skill, communication skills...etc from the course - which is what I hope you took away from it.