I wish targeted advertising was made completely illegal here, I am sure our society would greatly benefit from that.
I'd just say all advertising. It's effectively money time and effort we just light on fire.
Instead, we're forced to turn to third-party testers with dubious manufacturer relations - even when the results aren't freely available! - or technical knowledge (e.g. Consumer Reports using 1/3 octave smoothed power response for loudspeakers)...