Why wouldn't you take a booster now?
Current strains seem to be milder , if still very infectious. It’s still reasonable to take a booster if older (eg 65) or immunosuppressives etc and I’m not either group. A bit like those who are recommended to get the flu shot every year. Lots of younger and healthy people don’t get the flu shot and I don’t consider them crazy or reckless or anti-vax. But if people think the flu jab or Covid overall is a scam I put them in the same category as the crazies who used to shout on street corners (easier and warmer to do it online …hey GymRat 😀
I took original and first booster as the earlier strains were more severe, albeit in a small % of people.
I also took it to reduce chances of a more severe illness, I never expected it to fully protect me from just getting Covid which probably most of us have had by now.
In Ireland over 95% of adults over 18 took the initial round and I promise you there is no epidemic of healthy young peoe or athletes dropping dead from the vax

Happy Christmas