People actively seek information. People don't seek out advertising noise. They avoid such audiovisual pollution quite actively, so much so that corporations get paid in order to force the noise in front of people's eyeballs.
It's that forceful nature that violates consent. I came to HN to see comments from technologists on random stories as well as cool Show HN posts. So someone showing off a project here isn't advertising, it's just the exact information I asked for. It's when that person pays money to put his project in front of me while I'm browsing news or something that it turns into a massive problem.
The key is to differentiate noise from signal, advertising from information. Advertising is always noise they add to signal in order to get paid. Our brains aren't supposed to be sinks for their noise. Our cognitive functions are absolutely sacred.