The problem comes when you forget this, and you think about making adverts. People tend to do things to adverts that they wouldn't do to an editorial piece of design, or to a film. But unfortunately ads don't get processed differently by people. Either it's good or it isn't good. There are no excuses just because it's an ad. But still, people try to cram in way too much information, over-the-top branding, social media logos, and other guff, because it's an ad.
Sometimes it makes you think that people, clients and agency alike, have forgotten how to make interesting things that also happen to be great ads, and they only know how to make things that look and sound like adverts.