While the reason was changed ("Not Constructive" isn't very descriptive and not easy to understand), the criteria for closing based on "Not Constructive" stayed around, we just split it into two close reasons that both have narrow-er focus:

1. Too broad - There are either too many possible answers, or good answers would be too long for this format. Please add details to narrow the answer set or to isolate an issue that can be answered in a few paragraphs.

2. primarily opinion-based - Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise.

These two close reasons capture the essence of what "Not Constructive" was meant to be, and are both much clearer to boot.

(Disclosure: I'm a diamond moderator on Stack Overflow: http://meta.stackoverflow.com/users/16587/george-stocker )