Ian - if this were a "little" incident I wouldn't care. However, I don't consider this to be "little because:
1. There was smoke from an unpowered plane ...
2. ... of a type that has had fire problems before ...
3. ... which had the entire fleet grounded for months ...
4. ... for which there are serious question marks as to the efficacy of the solution, aaaand
5. The actual plane involved took days to repair.
I don't know what you would call "minor", and maybe this falls within your criteria. However, given the
PR nightmare that the 787 is becoming, the silence is counter-productive. Apologists aren't helping the case.