It is a strange form from the perspective of an outsider who is not educated in the concepts that it is built upon. Visually it appears to use a lot of tension in the movement, which look to be fairly abstract and without obvious combat applications. That abstraction does not bother me, as Chinese forms are sometimes built that way to develop other aspects that are not always direct combat interpretation.
What is most odd, to most people, is the vocalizations that go with the movement. There are several and at times it can sound like laughter and it is done loud and projected. The first time I saw the form demonstrated was some 25 years ago in San Francisco, by Y.C. Wong. I found it so odd, and given my own introverted personality I actually felt that if I ever trained Hung Ga, maybe I would just skip that form. And at that time I was dating a woman who had a deep interest in Hung Ga.
I’ve heard that people who dedicate themselves to this kind of training with the tension, run the risk of developing heart disease and high blood pressure and don’t always live a long life. There is at least a recognition among the Hung Ga folks that it needs to be done properly or you can be injured by it. I do not know what skills or attributes or conditioning the form intends to develop, nor how well it does so.