Guards march quick time at Trooping the Colour traditional birthday salute for Queen Elizabeth II

The transcript describes the passage of the Household Cavalry, highlighting the variety it brought. It then discusses a character who is now a 'marble to all his kind,' indicating a model or example, though not closely followed by others. Finally, it mentions the Duke of Edinburgh's observation of a group called the yolk fleet, which he found to be somewhat restless.

Why was the example of the character not closely followed by the yolk fleet?

What was the reaction of the Duke of Edinburgh towards the restive individuals?