Bielec,
a small correction. The people familiar with accident investigation/analysis do not actually "have to wait for the conclusions of the official investigation", just some more actual facts.
Derived from data such as flight recorders, ATC/CVR transcripts, captured readings from the flight instruments etc.
I don't think it has even been confirmed yet what type of approach the aircraft was carrying out. (A twin NDB approach seems to be a likely candidate.)
So the questions of, shall we say, a political nature, tend to be promoted by some in the absence of hard data.
Folk who work in the operational side of aviation are usually a fairly pragmatic lot, and prefer to wait until some facts are in.