Sy,
None of those structurally damaged planes would have flown for about 7 hours, as has been pretty much proved by INMARSAT engineering analysis. None failed to send out radio distress calls, none has their transponders disabled.
You seem to have a preconceived bias against human intervention, esp suicide by pilot (s). The NTSB opinions on both Egypt Air and Silk Air were pretty convincing on suicide with more data than you presented.
GF