It might be a good idea to return this thread 'to earth' with a brief summary of what we know.
Leaving aside what happened after the climb, what about the climb?
1) There is nothing in the BEA report to suggest that the aircraft caused it itself. The only 'query' here is the track record of system reaction to 'events', like the QF pitch anomaly and the 2001 North Atlantic altitude excursion with TC-JDN. It is worth noting that in this the crew did not trigger a climb. (There is some confusion (for me) in the AAIB report where the FDR traces suggest the TCAS RA occurred BEFORE the a/c left its cruise level). Had this crew been in the ITCZ at night and not in clear air in daylight it is worth contemplating what might have occurred.
2) There is nothing in the BEA report to suggest that the pilots caused the climb either.
Until the BEA provide the full CVR transcript AND RHSS trace from the FDR for the period 2:10:05 to 2:10:51 we are all guessing. Why they have not is a mystery to me.