Other than people making money off of them, I know of no one who is excited by the existence of billboards. In fact, they are usually a source of complaints. (There was some use for them pre-cell phones to find restaurants/gas/lodging during road trips.)

But even there, most people object to the personalized ads and the tech that measures it. People don't seem upset about ads in print magazines (that are tied only into the consumed content) or ads in podcasts.