I'm not sure what I'm supposed to understand from this article. Using off-the-shelf parts is par for the course even on military boats and submarines. They are

I'm not sure what I'm supposed to understand from this article. Using off-the-shelf parts is par for the course even on military boats and submarines. They are far cheaper than custom made parts with fault rates which are acceptable. With proper maintenance and redudancy, this is not at all an issue. The issue here is the carelessness of the team, the lack of proper safety engineering and an utter disregard for industry best practices. The equipment is not the issue. These specific practices would have led to an unsafe submarine even with custom made parts.