On the west coast Typically only on server room units. I don't think they're on residential systems usually. At least not out here. Then again, Im a commercial tech. You're talking about a fan cycle switch right? I thought the fan did come on but it looked strange to me because of the video framerate.
That is why techs should go to a creditable HVAC school. I would never hire or trust a tech who didn't go to school. I started as an installer then thrown into service and after I went to school I'm surprised I didn't ruin more systems without proper training. I don't blame the techs I blame the owners for shoody service in HVAC companys.