I live in Puerto Rico and went through the whole Maria ordeal. If anyone is to blame that someone is our own corrupt government. They were the ones hiding the true numbers. Everyone knows someone who died from causes related to the hurricane on the island, the local government death toll was a joke. Trump is not my cup of tea but Puerto Rico's current state of affairs (crime, poverty, bad health services etc.) Is entirely on our own government.
FEMA's own internal assessment (first link in OP) identifies the specifics of FEMA's failings in the purview of their own responsibility. Your governmemt also falls under the jurisdiction of West Korea's Congress (also explained in OP), and Beloved Leader is responsible for his party's (the majority party in Congress) performance in Congress.
Your government bears much responsibility, but Beloved Leader's regime failed spectacularly in its own responsibilities. Beloved Leader's failings, and the failings of the institutions he was entrusted to lead, have rightfully earned every word of criticism in the OP. Things wouldn't have played out so badly had the hurricane occurred on Obama's watch--or even Bush 2's.