Older demographics tend not to care much about what the page looks like as long they can access the content, which is why Clickbank landing pages apparently convert. Of course, this doesn't necessarily mean that pure HTML pages convert better.
Ha, I know! I actually have a funny story about that, too.I've actually seen this in people's houses when servicing their PCs. Go to old person's house, and they are using some 1990 website to gamble on the dog track. It's some of the funniest stuff I have ever seen.