Dikes can also lead to the destruction of swamps or coastal habitat reducing natural ways of capturing the carbon. In some places they can also lead to further land corrosion which counterproductively will only increase flooding. So dikes are no way a silver bullet to protect lowlands from the effects of the climate disaster.

Air conditioning does not protect workers that need to work outdoors, or people that live in areas with limited access to electricity.

And this says nothing of the other effects we still have no way of combating, including forest fires, stronger hurricanes, prolonged droughts, increased pesting of climate tolerant species, mass migration of climate refugees from the worst affected areas, and—eventually—conflicts and even wars arising from this mass migration. There is no technology that can save us from these effects.

Yes the effects of the natural world is indeed devastating. But there is no way the society as we know it can survive these changes. At best I see humanity regressing to another imperial age with constant wars around the planet, massive exploitation of the majority of the human kind, technology only serving to increase this exploitation, frequent famines, no relief after natural disasters (except for the wealthy few). And even this can’t last forever as at some point the mass of humanity will not bear it any longer and we can expect a societal collapse at a scale not seen since the Bronze age collapse of the 12th century BC.

The technology you talked about is only available in developed countries. What about the people in parts in Africa who already have problem in terms of food insecurities?