Oh, no these things are hilarious. They actually name all the possible individual side effects (some of which sound much worse than the original condition) but it's done in a voiceover that's played at like 2x the original speed.
It's like pestering users with alerts. After a certain point, you can't really blame someone for tuning them out and just clicking OK.
https://metro.co.uk/2020/12/18/covid-vaccine-volunteer-struc...
(Hard to find a nice source for this because there's a metaphor going around now about covid vaccines and lightning, but I saw it around more at the time. If anyone is better at search engines with date filtering or has a super reputable link, please share it below)