HA, I think you are missing the point of the article. While specific individuals will be relieved of their duties, the two accidents are symptoms of a larger problems.
1) The Navy is no longer properly training surface ship officers and enlisted. They show up on board not prepared to do thier jobs properly.
2) The surface ships are poorly maintained due to funding issues that the air warfare and submarine forces refused to accept.
They are both valid points, which contribute to the “why” you seek. Military and naval leaders have chosen to sacrifice training and readiness in favor of procurement of new systems. They same thing happened during the Carter years.
In 1974, as a newly-reporting Ensign, I hadn’t been fully trained as an underway deck watch officer either. BUT, I had a CO dedicated to that task. I was placed in a series of increasingly difficult situations until I was qualified for fleet ops. That paid off the day I prevented a collision at sea. Not bragging; just pointing out the benefit of an adequate training plan. Fortunately for the crew, that plan wasn’t diverted by SJW’s.