The most active posts are now bot-created open-ended conversation starters on r/askreddit to stir up activity and give the illusion of a thriving community. The questions are usually very redditer patronizing, and some of them are thinly veiled marketing analysis to create value for future shareholders. they’re often saturated with butt created responses.

As to why the post in question may not still exist? I suspect substantial posts about bot saturation are probably filtered out.