While the brand wasn't too specific beyond that, it noted that it was adding hybrid powerplants to many of its vehicles, ranging from the Mustang to historical gas guzzlers like the Explorer and F-150. It reiterated that it'll launch its first all-electric vehicle (the Mach 1 SUV) in 2020, and that it would have 16 EV models on the market by 2022. Some of the incentives for buying small cars, such as fuel economy, are going out the window -- you don't need to buy a compact car to get decent mileage. Combine that with North America's fondness for SUVs and small cars faced a major challenge.
There's also the matter of overall declining car ownership. Even if you discount changing tastes and economic situations, there just isn't as much reason to own a car as there once was. You can order many products online instead of visiting the store, and ridesharing can frequently cover quick trips. That's before self-driving cars arrive, too. Why pour so much money into sedans when many people might hop into robotic cars?
Other automakers haven't cut most of their lines, and we wouldn't count on when competitors like Honda and Toyota are still committed. Just don't be surprised if Ford's move is the start of a trend rather than an exception.