mRNA half-life is about 10 hours (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC403777/) so even if the vaccine contained 100 million mRNA strands, they’ll all be gone in a week.
Bookmarking your link. Thanks for injecting some reality in this thread. There are a whole bunch of non-doctors spouting lots of flat earth theories about the mRNA stuff here.