The reason:
For the bonfire and firework events this would mean that everyone attending provide evidence of their COVID status either through vaccination, testing or natural immunity.
Utter twonk! These displays are in parks, the open air, obviously! People sit or stand around in family or small groups, the wind is blowing. They are not crammed into a nightclub or sports stadium. This is snowflakeism gone mad! Beaches and parks have been open all summer, with huge crowds - no problem.
What we will now get are many hundreds of garden bonfires and displays with the attendant risk of some of them getting out of control, property damage and personal injuries - some serious.