Trump’s response comes entirely naturally and effortlessly to him. We see it as a strategy, but in reality it is simply his appropriate response. To dig any deeper is not necessary and works to confuse anyone who does not take it at face value.
It comes very naturally because Donald Trump has incorporated strategies into his way of thinking from reading, thinking and experimenting over decades over decades(Sun Tzu and others)
Those of us who have not studied those sources may need to tease out the strategies to understand.