Hopefully nobody told you that "this trial shows that substance X is not harmful" while pointing to this study, which is not a trial, but a cohort study making

Hopefully nobody told you that "this trial shows that substance X is not harmful" while pointing to this study, which is not a trial, but a cohort study making use of the fact that different birth years in Denmark received different amounts of aluminum in their already-approved-after-trials early-childhood vaccinations to study the effect on 50 different chronic diseases. They excluded children from the study that didn't fit the demographic they were trying to study (didn't get their early-childhood vaccinations, e.g. because they died too young) or that had other diseases known to cause the chronic diseases they were trying to study (if you have a respiratory tract infection and develop asthma, is that because of vaccines or because of the infection?) so that they could deal with slightly less messy data. Kennedy might've preferred it if they'd done a double-blind trial revealing injuries associated with high exposures to aluminum adjuvants in childhood vaccines, but that's not the question they were trying to answer.