This vaccine has been rushed to availability and not been carefully examined like had been required before. The sudden presentation of at least two vaccines seems to correlate to the US presidential election. Maybe it was rushed again to be available in time? While I agree that some fully developed vaccination will make a lot of sense it is warranted to be sceptical about what is made available right now. To try to force it on people with all the known shortcuts that had to be taken is even wilder.
It feels a bit like those aircraft rushed through development in WW2. Having known deficits but built by the thousands anyway.