All good news. I'm sure it's been posted on this thread already, but it's worth remembering how incredible it is to have three incredibly safe, effective vaccines come online in less than a year. Completely unprecedented. Prior to the pandemic, the process could take 10-15 years to go from start to finish.
The delays, snafus, etc are an annoyance, but negotiating through an imperfect process falls into the "good problem to have" category relative to where we could be in the absence of a vaccine. Not only that - the US is vaccinating the population much faster than most of the developed world. Only Israel, England, and one other country have rolled out the vaccine faster.
There are lots of imperfections that it's fair enough to grumble about, but having this many vaccines this effective available this quickly is also something worth taking a moment to be thankful for!