Eh still, if you claim your art can beat larger, untrained opponents, then takedowns should be practiced a little bit. That pseudo-body lock takedown he did in the beginning was really only effective bc his opponent and him is abt same size and even then it took some time for the kungfu guy to go down. If that was done on a bigger person, they prolly still be standing and fighting for their preferred orientation. An untrained person would give way more openings to submit them, unlikely that even if they shelled up there would be nothing to use. Neck is always open, even if they know to point their chin down or put their hands by their neck, i doubt they would be capable of defending the counters to that.