If there is nothing to hide, why do they hide it?

In May 2023, a federal judge in Texas ruled that the FDA must hurry up with disclosing data that underpinned its decision to license COVID-19 vaccines, ordering all documents to be made public by mid-2025 rather than, as the FDA wanted, over the course of about 23.5 years.

The pharmaceutical companies have also refused to release their data on vaccine side effects. So, is there an increase in cases of myocarditis, blood clots, and heart attacks or not?

And is it true that a study in the journal Frontiers in Immunology concludes that vaccine for COVID-19 reduces children's immune responses to other infections or that a study published by Circulation shows that some children experience heart inflammation after COVID-19 vaccination?

Obviously, a lay person cannot judge the hundreds of studies now coming out about COVID-19. But a lay person could react to the fact that the pharmaceutical companies and the health authorities attempt to hide as much as possible.