If a car mechanic spent 50 years designing safe and effective cars would he be qualified to make 5 billion rocket ships and give them to everyone and deem they just as safe?

after all, none of his previous technologies had any long term side effects, and rocket ships and cars are both "vehicles" and vehicles have been proven to be safe and effective.

So just let us inject you with our science cocktails every year because vaccines are vaccines are vaccines and vaccines are safe and effective.