Before anything LLM existed, I built a site[0] to generate fake "AWS Blog Posts." I trained a markov chain generator on all AWS announcement posts up to that point, copied the html + css of aws's standard blog posts, then glued them all together with some python + JS. It turned out, IMO, pretty funny! People familiar with AWS's blog posts would often get several sentences in before they realized they were looking at word-soup.
When GPT was new, I looked into using that to "upgrade" it. I spent a weekend messing around with Minimaxir's gpt-2-simple generating blog posts based on AWS content. What I found was, ultimately, it was way less fun. The posts were far too realistic to be interesting. They read like totally-real blog posts that just happened to not be true.
I realized then that the humor of those early markov generations was the ridiculousness. The point where, a few words or sentences in, you realized it was all nonsense. LLM's these days are too good for that - the text they generate is sometimes wrong, but rarely nonsense in a humorous way.
Markov chain content was wrong in a "kid's say the darndest things" way, while modern LLMs are wrong in a "My uncle doesn't know basic geography" way.
[0] https://totes-not-amazon.com/ - click any link to get a new one.