Once upon a time, the prior iterations of #blueanon had massive factions that thought the FDA was a Satan-Don Trump hybrid.
Had the FDA changed the definition of a vaccine over night and then asked you to take an experimental prophylactic posing as a vaccine, those vast swaths of old #blueanon would have lost their ever loving rough ridin' mind and it would have been a 60 minutes segment featuring Leslie Stahl in about 10 minutes.
Remember, originally numerous #blueanon apparatchiks loudly declared that there was not a way in hell they were ever going to get injected by Trump's vaccine, we have a mountain of receipts to prove it

Note to the usual suspects: This does not apply to non MRNA vaccines, I know you simps like to lump it all together