why?

Who cares man, just put in your body and, well, put more in.

I don’t know if this was meant as a jab at antivaxers but it works.

because it is not gene therapy, at least not the way the conspiracy theorists are using it. this is what they do, and the left did the same thing all the time, water down fact into a hearsay and spread the lies. I don't know if ur being sarcastic and mocking the conservatives or you really believe the conspiracy they're spreading.

It isn't? Can you please tell me its content, what it is made out of?

https://www.cdc.gov/vaccines/covid-19/clinical-considerations/covid-19-vaccines-us.html#Appendix-C