On cooking Shows they have serious range hoods to suck up things like billowing smoke, Your kitchen sadly has a crappy one.
I know your pain, I love seared peppered steak, but that smoke is effing toxic.
I read the OP as implying YouTube videos, which are often done at home by amateurs. But otherwise I agree that you’re probably seeing the helpful effects of serious range hood power, plus the final plated beautifully seared steak shown at the end may not have been the exact same one you saw being cooked, which may have been cooked over lower heat to minimize smoke but won’t come out quite s camera-ready.
You shouldn’t have to use oil in a well-seasoned cast iron skillet. Just get the thing really hot, then put in the steak. It will stick at first, but then it will release. You will get a minimum of smoke this way.