Because (a) you violated the site guidelines by editorializing the title (see https://news.ycombinator.com/item?id=17147115), and (b) to do that when the subject matter is divisive is flamebait, violating the guidelines in a second and worse way. HN's rules are the way they are for good reason. Please (re-)read and follow them from now on: https://news.ycombinator.com/newsguidelines.html.

Threads are acutely sensitive to initial conditions. What you did made a very large increase in the probability that this discussion would be ruined before it began.