Just like how Saudi Arabia decided to cut back production of oil right after Trump was elected, people associated with the fossil fuel industry realized that since the USA, unlike the rest of the world, was not taking climate change seriously, the oil industry got a reprieve. That's Saudi Arabia wasn't going to get stuck with worthless oil in the ground, and Ford didn't need to get stuck with a giant inventory of smaller cars.
Ford realized that big SUVs and heavy trucks have gotten a reprieve too. And those gas guzzlers are much more profitable. CAFE standards will probably get thrown out the window again too. Thus small cars will take a beating at least in the short term. This is why Ford is changing their investment strategy. (Though if they expect to sell cars in China or Europe, they can't ignore the electric car movement)
Thus Ford not building this plant is not a good sign for those who care about the planet. And if people think the worlds refugee crisis, and thus world terrorism is bad now, just wait when global warming starts accelerating.