The best way is to have the NN generate the HTML / CSS / JS code and then use a markov chain to create content to populate the page with.

It also has to do with quality of input. The texts on geocities pages aren't exactly pinnacles of clear and legible language. Same with the HTML.

Markov chains can't keep track of nested stuff though I thought?

I suppose that NNs have some sort of limit to how many layers they handle, but I thought they tended to learn nesting fairly well, unlike markov chains?

I could be wrong about this.