It kind of does though? I was a bartender at a very, very popular college bar. Often I was the only employee working Monday/Tuesday. I was a very scrawny, nerdy child-looking 20-year old.
I had to learn how to kick out championship D1 football stars, even pro NFL (actual) stars, if they happened to become belligerent those nights. We had all types of customers, including ones who specifically came in with intention to fight.
There was always some specific way to interact with them to make them leave of their own volition. Often with the biggest guys, it was to be aggressive and psychically “larger” than them. The smaller “fighty” dudes were usually the toughest, as they often felt they needed to prove themselves and I had to use a different tactic.
But what you describe “talking tough” was by far the most successful with the “much bigger guys”.
On the other hand, if you watch the movie until the end, it’s obvious that the movie has an unreliable narrator. We all know how the Tate/Labianca murders actually turned out. Not at all like the movie…
There is also another story where Gene supposedly choked out Steven Segal (who claimed his training would prevent it).
I have no idea if either is true, but personally if I was required to place a bet on a contest between a well trained and experienced grappler/shoot wrestler that outweighed his opponent (Kung Fu practitioner) by 75lbs…my money is on the grappler all day long.
Snowflakes.
That's consistent with your comment getting down votes.