The problem is we can talk about good or bad Web design, much like we can talk about good or bad music, art, or literature. Anything in the field of "aesthetics" (the philosophy of beauty and art) has become feelings based. It`s all a subjective field now, with no more interest in objective principles.
There are indeed objective truths about art, music, design, meaning, and everything else having to do with beauty and aesthetics. But since none of it`s taught in school anymore, none of it matters. People just say, "I don`t know much about art, but I know what I like."
And since the people designing these sites are doing so based on what they feel they like, there`s no solution. We`ll continue to get horrible sites that fail to accomplish any purpose.
The good news is that it still takes money to sustain a Web site. With no revenue and no visitors, the owner will eventually run out of money and take down the site. It`s culling the herd. Unless the government provides bailouts for failed site designs. :-)