There was a Simpsons episode where all the nerds, led by Stephen Hawking took over, with predictable results. It was a joke but still a warning against technocracy. Personally I see a strong analogy to various recent events, and sentiments I see expressed regularly.
Dangerous to the society? Not really. Dangerous to the elites? Certainly yes!
For sure they can. Someone with an appeal to power will take advantage of these people and tell everyone how smart the decisions are (s)he is making and that everybody else should shut up.