It's the opposite. It might have driven the person to actual self-commit. Allow me to hypothesize on their behalf:

- the employee pulled off the impossible

- may be already burnt out or on the brink of emotional collapse

- the "jump out of window" would have been as much of a joke as it was a coping response

- the righteous language policewoman does not feel empathy to personally ask him, how he is doing

- instead, she goes to HR to report him

- this unexpected hostility breaks the camel's back and what might have been interpreted as a joke actually wasn't. Still emotionally drained and now backstabbed, the person commits.

In short: policing voice was more important than taking a potential signal seriously. How is it not a despicable behavior in this situation?

PS: I hereby permit the commenters to reprimand me for the stereotype-based guess.