I really think the subject of this article has a preexisting mental disorder, maybe BPD or schizophrenia, because they seem to exhibit mania and paranoia. I'm not a doctor, but this behavior doesn't seem normal.
What is particularly weird and maybe worrying, is that AFAIK schizophrenia is typically triggered in young adults, and the risk drops to very low around 40 years old, yet several of these examples are around that age...