https://www.washingtonexaminer.com/policy/healthcare/judge-scraps-75-year-timeline-for-fda-to-release-pfizer-vaccine-safety-data-giving-agency-eight-months
https://libertyfirst.org/is-this-why-pfizer-wanted-trial-data-buried-for-75-years/
https://euroweeklynews.com/2021/12/09/fda-says-it-needs-75-years-to-release-pfizer-covid-19-vaccine-data-to-the-public/
Pfizer wasn't trying to delay the release, the FDA bureaucracy just wanted more resources to do the redaction.