A bit of tribalism in both aspects is understandable. In both, a lot of time, effort, and study is involved making them very much a part of who you are and how you see the world. As such, disagreements seem greater, as they often not only feel like disagreements but a challenge to your personal identity. Setting ego aside during discussions of both can be very helpful.
I'm curious in your Wing Chun studies, do you guys ever apply Buddhist, Daoist, or other eastern philosophies in your training? I don't have much experience with Chinese Martial arts, but talking with boxing and wrestling coaches and taking and observing their classes, I see a lot of the blue collar American work ethic in their approach to training.
As for Kung Fu films, if you enjoy those, I'd highly recommend you dabble in Westerns and Samurai films. You'll see very similar stories and similar character types in both of those. All three can be very entertaining, even the more campy ones.
P.S. John Wick was the tits.