@hightor,
I don't think that anyone would consider the Trump administration did a good job on vaccine release. They promised 20 million doses by the end of 2020 and delivered 3 million. They promised 1 million doses a day starting in January and the best they did on their last day in office (Jan 20) was 900k. There was complete confusion between the feds and the states. Often the states were getting incorrect information from the feds and and the feds were telling the states there are vaccines, handle it.
So how much credit can Biden take? I mean, Biden promised 1 million a day and he's been hitting that, but it was 900k when he took office and we were already going up the learning curve. I think the Biden administration gets good marks for improving communication with the states, there are daily meetings now and three week planning tools so states know what is coming. I think Biden gets good marks for using the bully pulpit to try to get the country on the same page instead of the schizophrenic messages between government officials and health officials. Overall, I think he's done well, I never expected miracles.