And this was mostly true from the original strain back in early 2021. The vaccine reduced the ability to contract and spread the virus dramatically. The chances of contracting and spreading the original strain, if you were fully vaccinated, was close enough to zero to say it basically wasn't happening.
Delta obviously changed that, and omicron has changed it much more.
You would think the Centers for Disease Control might predict this coronavirus like all other coronaviruses would rapidly mutate. This is the worst kind of data driven exercise where field knowledgeable people apparently pretend that the history of their field does not exist. Experts are clearly being siloed and gagged. I'd even bet Fauci is being told what to say, against his own judgement, but his position gags him. Any true scientist would be twisted into knots protecting their statements with caveats, but what does the public hear? Confidence!
Delta obviously changed that, and omicron has changed it much more.