Personally I think this is a case of someone being pissed that they've repeatedly backed the wrong horse. And, well, it's Symbian. Honestly, I don't know how *anyone* can get enthusiastic about Symbian.

tablet-guru? been there, done that, closed down because Maemo wasn't going anywhere big (oh, boy, was that wrong)

.. to become ..

maemo-guru .. been there, done that, closed down when MeeGo came along.

Now, with Symbian being given the wind down onto lower end devices, I think someone might be a bit sore that they keep making the wrong decisions compared to where Nokia is actually going. (MeeGo-Guru already being taken also probably pisses them off.)

That plus just having the wrong kind of personality. I mean, most people either pick a project and stick to it until they get bored and move on, or stick to it and then close it down for a valid reason, but all of these seem to be a bit .. erhh..

OTOH, it's also a great publicity move. They've gotten more media mentions/announcements than I bet they've had for a long time. It is Symbian after all - I honestly don't see how anyone manages to be enthusiastic over it.

[edit]:
tl;dr I agree with maluka.