Was Mathias Rust landing his Cessna in Red Square in 1987 just a bad PR look or did it foretell the collapse of the Soviet Union?
Irrelevant to the topic at hand, of entirely different scales.
My point is that anyone trying to use this instance to mock or dab on the ROC military/defense are being foolish and getting high over nothing.
A single kayak crossing the strait, landing on a random beach, and then leaving after filming themselves, during peacetime, is a relative non-event.
It is the equivalent of flying a small quadcopter drone and landing on a naval ship at port during peacetime -- a bad look but not a huge deal.
If one wants to have examples of incompetence of a force, use better examples.