Wait, half the time? How is that even possible without wrecking the texture? I tried speeding up creaming once after seeing a tip online and it totally messed up my cookies, they spread way too thin. My grandma would have a heart attack if she saw me rushing it. Maybe the video used a really powerful mixer or something, but in my experience, that slow creaming builds the right structure. It sounds like you got lucky with a good shortcut, honestly.