Bjornhall
I agree with the tone of your post above.
However I'm not sure that I agree with you that the fire would have been catastrophic to the ability to land.
The flames were certainly spectacular but it appears to me that the fire was entirely outside the structural interior and streaming in the slipstream.
I haven't seen any photos of the immediate area in the fire plume to tell if there is any metalization beyond the obvious post ground fire. If this was mentioned in the BEA report it would be significant, else to me the major issue was the shutdown of two engines.