"Facts" they may be but the context and derivation of those "Facts" is subject to debate. That is the crux of the problem in such debates as go on at places like pprune and pub bars in the wake of events such as this.
I would assume a Special Bulletin could/might contain more specific "facts" if something had been found to report and thus would provide better service to those who read the thing.
That was not the case here. The Bulletin merely set forth the status of the investigation to date thus providing an opportunity for conjecture about the cause. It would seem to me, mere conjecture serves no good at this point.