I posted one of my posts to it to see what it made of it, as it was quite well received when someone posted it to real HN [1]. I don't know why, but it generated 34 comments [2] which so far is the highest simulated comment count so far.

[1]: https://news.ycombinator.com/item?id=31074861

[2]: https://news.ysimulator.run/item/402