That's a leap, though. I get what you're saying but it's two different things: severity of symptoms is a completely different metric from "they had a heart attack" or "they died."

It's also a federal crime to file a false report, so this isn't just the shoe shiner selling stock tips: https://vaers.hhs.gov/reportevent.html.

If anything, this data might be missing reports (as noted by someone else below).