This shows how woefully ignorant you are about the Jones Act.
Puerto Rico asked for a waiver on using authorized, American-regulated shipping vessels. They asked for permission to use foreign vessels to ship between Puerto Rico and the rest of the US. However, the bottleneck that Puerto Rico is facing isn’t in the volume they’re able to ship and receive. The bottleneck it faces is in the ability to offload and transport materials from those ships to the rest of the territory, for which waiving the Jones Act would do absolutely nothing. Letting MORE ships into their ports wouldn’t tackle the issue because those ships have nowhere to go.
It’s a good thing that we’re using ships that we know follow American safety standards and maritime practices, and that have paid for the services that Puerto Rico is currently benefiting from in tax dollars.