Baekdal is linking to Web Pages that Suck article called Biggest Mistakes in Web Design 1995-2015. It's a great list. I think all designers fall short in some of these areas. For instance, I'm likely guilty of number fourteen: "Mystery belief in the power of web standards, usability and tableless CSS", though not to a great extent. As a designer, these are the things I control. The content of a site I work on is rarely up to me, that's the client's domain so to speak. So while I realize that content is king, all I can really do is present the content I receive in the most reliable and readable format I can. So if I err on the side of web standards, usability and tableless CSS, it's because I'm trying to do everything I can to present the content, in a clear and legible fashion, to as many people as possible. That's a mistake I think I can live with.