Disagree here. Reagan was in office between 80 and 88, so we don't know when this video was made.
You Can't Touch This came out in early 90s. But before it came out, RUNDMC we're global superstars. Toured major venues in America and the world, had multiplatinum albums, cover of mainstream magazines, global endorsement deal with Adidas.
Bobby Brown was the biggest star on earth for a minute, and he incorporated elements of hip hop in his songs. And Arsenio went on the air, and gave rappers a HUGE mainstream platform on national tv
That video could have been from early 80s when hip hop still could have died out and been a fad, or region North East thing....but by the time Reagan left office , hip hop was generating enough money that record labels were going to continue selling it