“As a growing chorus of scientists and activists question the Biden Administration's scramble to roll out booster jabs to Americans as quickly as possible, steamrolling the conventional approval process and leading to the resignation of two senior FDA officials, more research has just been released suggesting booster jabs simply aren't necessary for most people - especially those who have already been vaccinated once.”
There is one more thing you should know. Because the boosters are using the same Emergency Use Authorization (EUA) as the vaccine, this means they are really of the same vaccine. This is not some specific redesign to make the booster more effective for any new variant nor safer. So, it is just more of the same old vaccine.