It depends on the type of ad and way they're being delivered. Advertisers do in fact highly value events like the Superbowl, Tour de France, Olympics and FIFA World Cup. Instagram influencers and podcast bros still focus a lot of time and energy on shilling products and supplements in an "honest" way to their uncritical audiences.

Meanwhile, junk food, tobacco, alcohol and gambling corporations are always willing to fight tooth and nail to block attempts at advertising restriction and bans. Advertising in the long haul will always work, especially if it manages to stand out in noisy but bland environments.

As for the ones that we deem to be the most useless ads, perhaps they still serve an Overton Window purpose in maintaining a level of chaos and confusion along with keeping a marketing manager occupied with busywork (or ad fraud) until they have a real campaign to impress their boss with.

The fact that I still semi-regularly encounter "tech literate" people who refuse or are slow to learn to use uBlock Origin (or similar) says a lot about how accepting many people actually are when it comes to noise.