The idea that you don't view that situation as threatening is just so myopic. People who are unstable enough to threaten suicide because of romantic rejection are a danger to others, not just themselves. Ask a woman, literally any woman you know, about whether they would feel safe in that situation.
I asked a few (non-representative anecdotal sample) womans (programmers, managers, etc.) around, they all considered it safe unless the person crosses the line and starts stalking or exibit any other kind of oppressive behaviour (coming/staying too close, "accidentally" touching, stealing your belongings, starts looking for a ways to be alone with you).
Everyone of course is different and the same situation could be interpreted differently by different people. Some could even overreact a single glance or intonation therefore we need to draw a line between harrasment and being a weirdo and don't jump to conclusions too early.
From what I currently see (I haven't been there and can judge only by media), the situation has been pushed from personal issue to a political leverage. And this is unacceptable. What could have been done instead? I don't know, may be an open letter from a few persons to ask him to be more polite and/or ask to seek consultation with a psychotherapist? But cancelling is not the way.
