I'm pretty sure this is why the LLM does this. There's so many stories about the fact people are more likely to pick 7 (including opinion pollsters doing it) that it creates a strong linguistic association between the phrase "pick a random number between one and ten" and the number 7 following.

Spot the difference.

Admiral Lord Mountevans really did not have databases in mind when he came up with his "two falls wins it, but if you get one submission and the other guy doesn't score, you win, but if you get a fall and then you get knocked out, he wins, oh and once in 33 years we'll do a double pin."

"Keir, I'm sorry I've written your name down, I hope I'm wrong"

That's Korakuen Hall and the Burger King knock-off by Ichigawa Chocolate Plaza in one!