Did you actually read your link it is speaking about the anti bodies that are produced by the vaccine and by your comment "shockingly the vaccines don't just sit in your arm" you must think that what was injected into your arm is meant to travel all around the body and into the nose etc etc etcCOVID-19 Vaccines Produce Antibody Response in the Nasal Mucosa | Newsroom
A new study by researchers in the UNC School of Medicine, including Meghan Rebuli, PhD, Ilona Jaspers, PhD, and Kevin T. Cao, has found that SARS-CoV-2 mRNA vaccination produces a robust immune response in the nasal cavity.news.unchealthcare.org
Yeah, shockingly the vaccines don't just sit in the arm as a solid lump until you die of old age.