Suspending all normal human trial levels of testing, for a drug and technology that had killed all lab animals in the past, for a cold/flu that had a 0.5% death rate, so it could be injected into hundreds of millions of people under an emergency authorization, was not a good idea. And should never be excused.
You speed up this type of development you exponentially ratchet up the risk! This was poorly poorly communicated to the public. Trump clearly dismissed these risks. I guess he bought into the PR that COVID was the Black Plauge so high risk was acceptable. Was his germophobic personality quirk played? Maybe? (If he really has such a phobia.) Also, Fauci as a player\messenger had a poor track record! Remember the hype we were all going to get AIDS? That was Fauci! Does no one remember the 1980s? Didn’t anyone in his administration do 15 minutes of research on Fauci? It would have e shown him to be a serial exaggerator! Maybe people were afraid to tell Trump? Maybe they’re afraid to tell him to shut up about the vaccine. Apparently there’s a quote of him claiming it should be called a Trump-ccine!