If this was a typical single action, I would completely agree with concerns about pocket carry. However, from the video, it looks like the trigger travels farther than I would expect for a single action, looking more like what I would expect from a partially preset double action like the original LCP. However, there is a clear difference in the trigger weight for the first 3/4 of the trigger pull and the last 1/4 of the pull. If the weight for the first 3/4 is adequate (5-6 lb.), the remaining pull is not much more than that, and the hammer or firing pin block mechanism is sound, I would not have a problem with this as a single action.
As with any pocket carried gun, a good pocket holster (which Ruger is smart to supply) and nothing else in the pocket are always wise.
Another maker of pocket pistols, whose products I own and generally like, insists on heavy DA trigger pulls for "safety." As evidence for the need for this, they once cited an instance of an idiot who managed to have an accidental discharge by carrying a Kel-Tec P-32 in his pocket, without a pocket holster, and forgot that his knife, on a keychain, was in the same pocket. The knife or keychain worked its way into the trigger area as he moved around. Reaching into the pocket and pushing down on the gun discharged the gun, fortunately causing nothing more than a hole in his pants and some embarrassment. I don't know if the heavier trigger would have prevented this from happening given that the user's entire arm was pushing down on the gun, but proper carry certainly would have prevented it. The heavier trigger definitely makes their guns harder to shoot.