What good would knowing the exact nature of the technical problem have done?
I should imagine that the reason why none of the ground staff knew what was wrong with the aircraft was that the engineers were sweating blood out on the ramp trying to fix it and were to busy to tell them.
Mind you ground staff are not aversed to claiming a “technical” problem when it’s their computer system or eaven the baggage belt breaking down!

Rgds Cking