Well if it is true and the booster goes well we won’t have anything to worry about
It depends on what you mean...
As has been the case throughout this, the risk to any of us, individually, remains pretty small particularly if you have no underlying health conditions and are fully-vaxxed up.
But, at a country level, I think there are still grounds for quite serious concern.
I'm absolutely not saying this will happen - and I never have - but I still think that in the first quarter of 2022 there is still a solid chance of the need for any of quite severe societal restrictions such as school closures, hospitality closures, crowd-less football (possibly the temporary cessation of football), hospitals swamped leading to regular care being postponed, right up to and including the lockdowns we have previously experienced.
It still comes down to the same thing: a large number of infections is likely to translate to a lot of people needing hospital care.
Like anyone else, I'm crossing my fingers which I think is a better approach than sticking them into my ears and saying "La la la la, everything will be OK".