This is what intelligent people do. They recognize patterns and extrapolate. At this point the vast majority of people have experienced variations of what this guy has gone through.
In my own experience I have seen the exact same pattern of behavior in a slack community set up for my town.
> This is one of those posts where the title is going to trigger a lot of unproductive subthreads,
They seem quite productive to me. This sort of pathological behavior is increasingly common and finally people are willing and able to talk about it in public.