It may be low-level drama to you, but clearly the author felt threatened by the couple. The spam messages, the threats to release personal information, etc. I would have no qualms with seeking legal action.
To me that would indicate some serious "boundaries issues."
In cases where someone feels harassed "judgment" isn't necessarily even the point.
Legal action is taken, you get a lawyer, they get a lawyer... often their lawyer tells them not to contact you or people you know anymore (because that is what a good lawyer will do) and it is effectively resolved. For some people that may be enough / the entire goal and it can cost as little as everyone talking to a lawyer once.