I can explain the existence of the vaccine court in one sentence: Idiots who don’t understand the difference between correlation and causation end up creating bureaucracies that waste everyone’s time and money.
...don’t understand the difference between correlation and causation...
You have no facts to make this claim, and I'd guess you haven't researched this topic at all. You have a point of view, and no amount of reason will move you.
...end up creating bureaucracies that waste everyone’s time and money.
Congress created it, after specifically exempting vaccine makers from lawsuits. You'll say it was to stop shyster lawyers, I'll say it was to prevent the facts from coming out and risking the US population's herd immunity due to non-compliance, and we'd both be right.