Sosnoff had been a successful options trader for a long time before he co-launched ThinkOrSwim. (His greatest trade probably was, of course, selling it to TD Ameritrade. :) ) I believe he was principally a market-maker on the CBOE, which is a particular role that probably affects his views on trading. (Details here: )
I don't really know anything about his trading methods, nor his trading either, nor his videos for that matter, but I assume he found a niche and exploited it, and that in some way his stated views reflect his experience. I think his experience deserves respect, and I always like to know what successful traders think, and to ponder them. Unlike a lot of people, their views are not just the opinions of someone who hasn't much, if anything, real to stand on. But his views are still just the way he is framing things from where he stands, and with his experience, which is all anyone can do. Expanding that experience to say what is the "only" possibility is a stretch.
Words like "only" and "never" and "always" and "none" and "no one" are extremely strong assertions. When someone says things like "The only way to do x is y," they have said something that probably is a big over-reach. It's like stating a law of nature.... but usually they're only giving their opinion. The opinion may have a good basis or it may not, but it's not like stating the law of gravity. It's a generalization based on what someone knows and has done. That's it.
I value artemiso's critique based on his knowledge of what big firms are actually doing. Usually what someone thinks the "big players" do is just imagination, so it's great to get an informed view. It also offsets the "only way" assertions Sosnoff made with another perspective. Likewise, I value it when WoodyFox basically says that no, he himself actually does the supposedly impossible things. An actual counter-example is a strong argument. There are others who trade here who can say the same.
None of this argues for another group of "only way" assertions. :) And of course, a lot of things simply don't work. The problem comes from getting too ambitious in carving in stone a list of what "always" or "never" works. Some things should be on such a list, but we should be careful about what we put in stone.