You are totally right and totally wrong at the same time. Yes - the solution must be in large parts a technological and scientific solution, there are so many things we have to change. No - only engineers and scientists will not make a difference, engineers work for the government or companies and both need policies to shape markets for their products or investments. We need the public at the same time to shape the markets and give the engineers something to work with. Addressing climate change means changing the incentives and the direction of our technological development... and in a democracy we all get to decide on that, that politics.