If I was Trump I’d just say “Your F’d” and it will never happen again...get the F’ out’.
Trump has a certain amount of ‘exposure’ in the Covid-vax roll-out. Project Warpspeed.
If I had to guess, I’d say that Trump wants the narrative to be positive toward his version of 2020’s events, and Pfizer want to limit the blame that is going to land on them.