Surprises me that YouTube videos don't use them - instead the YouTubers say: "click the link in the description" but I am always using a console to watch YouTub

Surprises me that YouTube videos don't use them - instead the YouTubers say: "click the link in the description" but I am always using a console to watch YouTube on TV from my couch, so I never click their link. Also free to air television never uses them. Also I've never seen one used on the giant screen at a sports game or concert. Also they could just be used for paying for anything at the checkout.