I'm really struggling to see where you're coming from on this. Mentioning what are the possible and more likely technical reasons for the malfunction of the aircraft is not disrespectful to the dead in any way that I can see.
If he had said something tasteless - or insulting to the memory of the deceased, I could understand your objecting to that. But that's not what was done.
He's not saying anything much different from the experts that have been discussing this on various news outlets. There were two aviation experts talking (or speculating, if you'd prefer) on the BBC about this the other day - here's an extract from the report on what they said:
Would you say the BBC and/or these experts were being disrespectful to the dead by discussing it in this way?The experts agreed that there appeared to be a problem with the tail rotor, which explains why the helicopter started spinning.
The tail rotor is at the back of a helicopter and is there to prevent the aircraft spinning in the opposite direction to the main rotor blades.
"Basically it's a loss of power to the tail rotor," Mr Rowlands said.