Theater. Just reinforcing the fear propaganda to encourage the death shot.
Pretty much a third of all people go one way, another third go the opposite way, and a middle third will go either way, reluctantly. One third of all people will run out and get vaccinated, me, and another third will absolutely not get voluntarily vaccinated. The middle third will eventually be coerced into getting vaccinated.
It is the one third who will not be vaccinated voluntarily that the covidians are counting on. As long as there is a signficant portion of the population that is not vaccinated, they can keep hand wringing and fear mongering about covid. They say they want these people vaccinated, but they really don’t. If everyone got vaccinated, they would have to admit to a fact.
The entire strategy of the covidians is to keep it uncertain as much as possible, to never be pinned down as to any specific fact. As soon as we know something, they will have to change the approach. The reason they love Fauci so much is that he can say one thing with total sincerity, couched in highbrow language, and within a couple of days he can completely contradict what he has said previously, also with complete sincerity. He truly believes whatever he is saying at the time he says it.