The context of that video is that the daygamer in Dallas is a novice daygamer. For a novice daygamer, it's a so-so approach.
I've never believed in the running from behind a woman, going in front of her, and then delivering the opener tactic like the guy does at 14:35 and with his other Katy Trail approaches. It is a more cringy way to approach in general.
I agree with
@mikedee that any number he got during his Dallas daygame session will likely end up as a flake.
The primary value of linking that video is to show that this novice cold approacher actually chose some good, targeted areas of Dallas for doing approaches. In the entirety of that video, he approached at the Katy Trail, Klyde Warren Park, Griggs Park, and on random side streets of Uptown Dallas. Katy Trail has a lot of foot traffic for unmarried people in their 20s/30s. Klyde Warren Park and Griggs Park are both urban parks near Downtown Dallas where a lot of the nearby residents are unmarried. Uptown/Downtown Dallas are areas with a high concentration of unmarried people, so approaching on a side residential street near apartments and townhomes is not a bad plan.
My point is that even with choosing solid venues for approaching AND having solid approach tactics, approaching strangers is often very inefficient and doesn't deliver fantastic results.
I have done daygame approach sessions at Katy Trail for 2 hours on a weekend afternoon and come away with nothing to show for it. Unlike that novice daygamer, I am a daygamer with 10+ years experience doing daygame and sometimes I still walk away from a Katy session with nothing. Katy has the best and most targeted foot traffic of any outdoor venue in Dallas. I have also daygamed at Klyde Warren and Griggs too, though less frequently than Katy.
Also, Dallas is a very competitive market in general.