""We did not refer your application to the Vaccines and Related Biological Products Advisory Committee because our review of information submitted in your BLA, including the clinical study design and trial results, did not raise concerns or controversial issues that would have benefited from an advisory committee discussion""
They contradicted themselves. Not only were "concerns" raised...the FDA themselves state that the multi-year studies are required because of: "known serious risks of myocarditis and pericarditis and identify an unexpected serious risk of subclinical myocarditis"
More here: FDA "Approval" of Pfizer Injection COMIRNATY States There Were No Concerns Or Controversial Issues - Yet - Pfizer Is Required To Conduct Several Long Term Studies (08.23.2021)