Actually, I hesitated before posting... I had ruled sarcasm out because purely snarky posts are usually frowned upon here, and your parent post was asking a legitimate question...
In all seriousness though. That is kind of the correct answer to the parent. There's kind of this weird attachment to a whole bunch of weird 'best practices' in the design front. Many of them conflicting, many of them not well thought out. (There are some good ones coming out).
It's similar to twitter's bootstrap. Designers think it's horrible, if you believe the kind of blog with grey text on a grey background. But I can't believe people would recommend against it when they've seen the alternative.