The author states they are primarily a software engineer and have also been guilty of following these patterns, so the clear implication is that they understand

The author states they are primarily a software engineer and have also been guilty of following these patterns, so the clear implication is that they understand the patterns. The author isn't making the case "I don't like it," they are making the case that these patterns actually lead to more and bigger problems in the field of scientific computing than the usually simple errors of ignorance committed by non-programmers.