Having worked in vaccine development for a decade I remembered an adage that if a vaccine needs a booster, it doesn’t work! What concerned me too was that they were boosting against a virus that had long since left the planet so, at the very least, it would do no good but more likely do harm, inducing immune responses that would be positively harmful and enhance susceptibility to infections with other viruses/variants, as has exactly turned out to be the case.

https://www.conservativewoman.co.uk/massive-cancer-deaths-study-vindicates-my-warnings-over-covid-boosters/