As a guy who does construction but also an actor who has done background work in TV and movies, he does it right in reality. For one who can’t make noise. Audio for actor lines only. They add all the sfx afterwards so the sounds are pure and isolated. Second, as someone else said he couldn’t make dust. They will add this vfx if they want, then. They like to be able to be as controllable as possible to have fewer variables in the equation and more iterable for continuity.