Yes, but there is no easy way to transfer Amazon money into money outside of Amazon to purchase things outside kr Amazon. So, Amazon “refunding” you with a voucher doesn’t really do anything (Amazon is gonna get that money anyways, since you can only use Amazon money in Amazon).
People are down voting you because your singular personal experience cannot possibly be extrapolated to the entire population who took the vaccine. No one is saying you’re lying, or trying to delegitimize your wife’s condition (I’m sorry that happened to her), but you don’t cite any support for your opening statement
other than your wife’s ailment.