This, but you should heat it until it just begins to smoke, then turn it off and let cool. The seasoning is built up by the polymerization of the oil. If done correctly, it will eventually build up a ceramic-like coating that is non stick. This is why the detergent myth doesn’t matter. You aren’t soaping away a polymerized coating out of the pan.
You also just need to use enough oil to coat the pan. So save money on not wasting oil. I use a couple to half dozen drops and wipe it out with a towel. If the coating goes on too thick, it can get brittle and chip off in parts, leaving a craggy layer. The idea is to build up a tiny layer lots of times over the years.
To me, it looks like a combination between the camera zooming in and her turning her hand a little, both making it seem to get larger. I don’t think it’s ai made, but I’m not an expert.