The problem with the "wait for the official enquiry" approach is that all such enquiries seem to get mired with their own processes and take often years for the results to come out. Yet the actual detail of the problem must become known to those at the centre of things within hours. In the meantime speculation and uninformed comment have a field day. Statements of "we can't comment before the enquiry" get seen as whitewash.
Even the AAIB, generally seen as one of the better organisations, takes many months to report on trivial issues. And anything where lawyers get involved always seems to get dragged on for years (which is doubtless why certain people want the lawyers involved in the first place).
Interesting to see BBC news reporting on the serious explosion of the fuel train in Iran recently, that the Iranian Government set up an immediate enquiry on the Tuesday, to report back the following Sunday.