Stupidity is not limited to low IQ. In fact, those with intelligence, in the common sense of that word, demonstrate more stupidity than those without, because they have no excuse. I have often ponded why this is so.
Our world is currently the recipient of so much that comes from intelligent action, and yet so far from the essentials of a meaningful life. We have more clever gadgets, and more clever education, than at any time in known history, and yet we are further from our 'higher selves', as you put it Juhani, than at any time, from my estimation. There is no doubt an inverse relationship at play in this. Just like youth are more connected and more lonely than ever before.