I'm surprised it's as high as 6%. I would have expected anti-vaxxers to flood programs like this with bogus claims well more than 94% of all claims.
Major complications from vaccines are exceptionally rare. It's not at all surprising that there are very few successful claims that it's happened. It doesn't happen much.
Compared with the loss of life and livelihood from acute and long COVID, a tiny chance of vaccine side effects are an easy price to pay. For every 1 person injured by a vaccine, hundreds or thousands are prevented from catching disease with long-term symptoms.
Smallpox is extinct because of vaccines, and polio was on the brink of extinction before COVID messed up vaccine distribution programs.