People keep using the phrase “trained martial artist” as if it means anything. Especially coming out of Hollywood…
And even if she does have authentic martial arts training, why does that make everyone think that she must be cast with the intent of using that skillset? Actors often have wide ranges of experiences in their backgrounds that may or may not come into play for any given role…
Of course she doesn’t have to, but Gina Carano is a martial artist and Sasha Banks is a WWE wrestler, and they’ve both got to show off in hand-to-hand fight scenes. You could hire an actor, but when you hire someone who can act AND fight well… you’re getting an added bonus you might as well use, and they might be able to charge more because of it!