It’s not a pivot for me, particularly since I got the vaccine, but I think there are legitimate reasons to be hesitant and removing one reason doesn’t invalidate other reasons people may bring up. The big one in my mind is how do Pfizer, BioNTech, or the FDA validate safety of the vaccine over the long term? For instance what if it turns out that something approved today turns out to be carcinogenic twenty years from now? This is one reason I feel mandating vaccines or coercing people using other means (like creating great inconveniences) is not okay.
It also does seem like the approval process may be influenced by political pressure to remove barriers to hesitancy or to support vaccine mandates. My understanding is that the approval timeline here is faster than any previous one. Did the FDA really review the over 300,000 pages submitted for this approval and scrutinize it to the extent necessary? Maybe. But from the outside it seems suspiciously quick based on relative terms.