If you want to send me email, my username is "jon" and my personal domain is "jdewerd.com".
The internet itself went through a similar growth pattern without astroturf. The original users were all researchers, which served as a strong implicit filter, and then the new users were students who had to be taught Netiquette every September, and eventually the floodgates opened to the public and the academics lost the ability to steer the culture in what was called The Eternal September (1993).
The same "initial implicit filter followed by gradual but inevitable reversion to the mean" dynamic explains your observations of early reddit without implying fraud, although it certainly doesn't imply the absence of fraud either. That said, "fraud" is probably a strong word for reddit astroturf in this present day and age where we have a (comparatively) planet-sized Dead Internet built on geological quantities of ads and slop.
No, that was 4o. Agreed about factual prompts showing less sycophancy in general. Less-factual prompts give it much more of an opening to produce flattery, of course, and since these models tend to deliver bad news in the time-honored "shit sandwich" I can't help but wonder if some people also get in the habit of consuming only the "slice of bread" to amplify the effect even further. Scary stuff!
This project is an enhanced reader for Ycombinator Hacker News: https://news.ycombinator.com/.
The interface also allow to comment, post and interact with the original HN platform. Credentials are stored locally and are never sent to any server, you can check the source code here: https://github.com/GabrielePicco/hacker-news-rich.
For suggestions and features requests you can write me here: gabrielepicco.github.io