There is a huge amount of unremitting drivel written on this website, some of which seems unfortunately to be read by Richard Quest...
Apart from a strong of ACARS messages, nobody here knows a thing about what happened last night. Uninformed speculation about the manufacture of an extensively tested and operated aircraft with experienced crews serves absolutely no useful purpose to anyone.
At this stage, we know only that a tragedy occurred and that the aircraft reported numerous failures caused by circumstances unknown.
I suggest that anyone wishing to speculate about any of those matters, either in the media or elsewhere, consult a list of all accidents since the Wright brothers took to the skies, and list out all possible accidents that have occured since then.
Anything else is uninformed speculation.