Speaking as a software developer myself, I can say that wordiness in bug reports, although not a "problem" as such, can sometimes act as a deterrent. It's the same reason that "me too" comments on bug reports are discouraged. Generally it's a lot easier for a developer to get to work on an issue that succinctly describes the nature of the problem, and the proposed remedy, rather than one that requires reading through a longer discussion, possibly having to pick out relevant parts from multiple comments.