Raikkonen's a bit like marmite. personally I just fine him rude, if I earned the money he earns I would be move than happy to talk in a press conferrence and with a smile on my face
You don't know him personally so please stop.
Some people are very uncomfortable speaking in public and it's obvious Kimi is not feeling well in these situations. Look how Vettel quite often say something to Kimi to make him feel little better. Vettel is a personal friend to Kimi and likely understand how Kimi feel in these situations.
All humans are different!