If the scientists were, at the time, not yet sure how the vaccine affected transmission. The correct 'fact check' should have been:
"There is no conclusive evidence to claim COVID-19 vaccines prevent people from spreading the disease."
instead of
"There is no conclusive evidence to claim COVID-19 vaccines do not prevent people spreading the disease."
>Meanwhile, there is currently no conclusive evidence to claim the COVID-19 vaccine stops people spreading the virus that causes the disease – nor is there for the opposite.
>Scientists do not yet know whether COVID-19 vaccinations will reduce transmission because this was not tested in the trials.
>With the latter, this could mean the virus continues to replicate in the nose and throat, and is still able to spread.
>Scientists are not yet sure of how the vaccine affects transmission – and this is currently undergoing research.
... you are seizing on a single double-negative to claim you've been misled? A double-negative which is equally as accurate as what you would like it corrected to, because in the body of the article it says there's no evidence one way or the other?
This is really the hill you're choosing to die on?