There are examples of ships that has lasted a long time in active service and there are examples of ships that suffer severe damages at a very early stage. The fact remains that older vessels are more prone to damages and accidents due to corrosion and/or fatigue, or due to machinery and and equipment failures than newer ships.
It is a fact that the average age of US flag ships are very high by international standard and there are no reason to believe that these ships are better designed, built, equipped or maintained than ships under other registers it is natural to compare with.
It should thus NOT be any surprise that incidents, accidents and near misses happen as frequently, if not more so on US flag ships as on ships under other White listed registers: