[JetSetWilly]

Presumably whoever did it is a clever person. If I were in that position, I think it would be a fairly obvious step to season the article with subtle misdirections that send people on a wild goose chase. In fact it would be quite fun to do. So I wouldn't take the "information" in the article at face value at all.

[prklmn]

I don't think being clever with code necessarily equates to having common sense. If he had common sense, he would have went on his merry way without bragging on the internet...

[C4stor]

You possibly vastly underestimate how important it is for people commiting "perfect" crimes to tell the world it was them. There's a lot of stories about forgers including subtle clues in their forgeries to be able to claim their "art" and prove they duped people.

[keerthiko]

This. This is also essentially the premise for (the original) Death Note (except a God complex rather than proving they pulled a fast one).

[mcv]

Chances are that misdirection is exactly why it started with the Tinder date and mentions the Bastille Day.