Trump is probably on the list, so he has to protect that. The Democrats had it during their entire presidency; even if they didn’t want turmoil during their time in office, they could have released it after their presidential defeat and before Trump took office.
Subsequent to the Panama Papers, there were arrests and financial seizures in many of the named countries: https://en.wikipedia.org/wiki/Panama_Papers?wprov=sfti1#Recovered_money
Let’s not forget the assassination of one of the reporters https://en.wikipedia.org/wiki/Daphne_Caruana_Galizia#Death