This may be important to the author but it isn't a top priority for the administration. Competitiveness with China and onshoring manufacturing are certainly talking points but they is not stated as the primary motivation for the tariffs. The administration characterizes trade imbalances as countries taking advantage of us. The tariffs are targeted based on trade imbalance. If manufacturing was the goal why apply tariffs to things like raw materials? If competition with China is the goal why apply tariffs to South Korea or Japan, pushing them closer into China's orbit? These are just not the goals of the tariffs and neither their rhetoric or actions suggest that they are.
People have a hard time dealing with values and motivations that are wildly different from their own so they construct all sorts of parallel explanations and defend those instead. But talking about these explanations is non sequitur. It is like the administration adopted a policy of jailing all Capricorns and only Capricorns and people started writing think pieces about how the criminal justice system would be more efficient if they focused on programs to reduce recidivism.