During the beginning of all this everyone was freaking out about how we were going to be able to ship and store this magical elixir at -70F. They were adamant about it. People were worried about refrigeration shortages.
I'm sure it cost a significant lot more to ship something then store it at -70F.
What happened that we went from this getting shipped in temperature controlled shipping containers, to sitting on a truck in a cardboard box next to my Amazon order...
I followed this aspect of the story early on because I'm an engineer and enjoy looking into logistics like transport and delivery. For what its worth, there are two factors that tell me there is nothing sinister in the 'temperature' angle.
The initial requirements were for extremely cold 'long term' storage. They knew that even local pharmacies didn't have the means to keep it that cold. So it's kept very cold when manufactured, and when delivered, but once received it can be stored at a more normal refrigeration temperature as long as it is used within 'x' days. I forget the numbers, but something like 15 days.
The initial requirement for extremely cold storage was due to many unknowns. They didn't KNOW how cold it needed to be kept (or for how long) because they hadn't had it long enough to do actual long-term tests on stability. So they erred on the side of caution and required very low temp storage. As time passed, they relaxed the temp requirements based on experience.
I'm not sticking up for the vax as such, I just think this one is not a valid issue.