Here's the FDA testing and approval process, including Emergency Use Authorization, which is only used in declared emergencies:
Phase 1 test - usually less than 100 participants; tests for safety and effectiveness at two or more dosing levels;
Phase 2 test - often less than 1000 participants; further testing for safety and effectiveness with a fuller demographic range than in Phase 1;
Phase 3 test - With the Covid vaccines, done with 30,000-60,000 participants; further testing for safety and effectiveness as full a demographic range as practical (e.g., not many Tibetans or Uyghurs);
Emergency Use Authorization - Only used in declared emergencies; based mainly or entirely on data from Phase 3 testing; with the Covid vaccines the FDA required at least 2 months of data from the last participant injected (with the second dose, in the cases of Pfizer and Moderna);
Biologics License - Full approval.
Calling "Emergency Use Authorization" a "technical issue" is as imprecise and potentially misleading as saying the Covid vaccines authorized by the FDA under Emergency Use Authorization are "experimental" (the favorite word of anti-vaxxers, anti-Covid-vaxxers, and some Covid-vax skeptics). None of the three Covid vaccines authorized for use by the FDA currently have a Biologics License (= full FDA approval). I do not know how long the process will take, but Pfizer began the process of obtaining a Biologics License on May 7th,
https://www.pfizer.com/news/press-release/press-release-detail/pfizer-and-biontech-initiate-rolling-submission-biologics , and Moderna began that process on June 1st,
https://investors.modernatx.com/news-releases/news-release-details/moderna-announces-initiation-rolling-submission-biologics . J&J received EUA later than P and M, and thus would not begin the Biologics License Application process until later.
Based on what I've seen from anti-vaxxers and anti-Covid-vaxxers
elsewhere, when, as seems likely, Pfizer and Moderna do receive a Biologics License (= full FDA approval), I do not expect many anti-vaxxers and anti-Covid-vaxxers to be honest enough to drop the "experimental vaccine" meme/narrative.